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Citation Style & Formatting Guide: ACS Style

Basic ACS Formatting Rules

  1. Source citations should be listed in numerical order as they appear in the text rather than alphabetically by author's name, unless using the Author-Date in-text citation style. 
  2. Reference lists should be single spaced and use a hanging indent. 
  3. Check the capitalization and italics for each citation in your references list. 

ACS Document Formatting

The following sections of the ACS Style Guide (3rd Ed.) address the following formatting guidelines: 

  • Grammar, Punctuation, Spelling - Chapter 9
  • Tables - Chapter 16
  • Figures - Chapter 15
  • Chemical Structures - Chapter 17

Superscript in Microsoft Word

Microsoft Word - Hanging Indent

ACS Style Guide (American Chemical Society)

How do I cite...

In-Text Citations

In-text citations are abbreviated citations following an idea or quoted text in your writing. 

In-text citations must always correspond to an expanded citation in your references list. 


Basics of ACS In-text Citations: 

  • Quotes - when you use the exact text from another source, this is defined as "quoted text." 
     
  • Paraphrase & Summary - when you paraphrase or summarize another author's idea or writing you should give credit to the original source by including an in-text citation. 
     
  • ACS In-text citations can be utilized 3 different ways: Superscript, Italic Numbers, or Author-Date. You should ask your professor which of the three ways required for your assignment. 
     
  • Superscripts - a number corresponding to a source in the reference list indicating the source from which a direct quote or paraphrased idea came from. A superscript number 1  inserted into the document immediately following a fact, concept, or quotation being cited. 1

    1. HPU Libraries. AMA Citation Guide: In-text Citations. https://guides.highpoint.edu/ama. Accessed February 13, 2019. 
     
  • Italic Numbers - a number corresponding to a source in the reference list indicating the soruce from which a direct quote or paraphrased idea came from. Italic numers are parenthetically inserted into the document immediatly following a fact, concept, or quotation beign cited (2).  

    2. Dodd, J.S.; Solla, L.; Berard, P. M. Chapter 14 References. In The ACS Style GUide: Effective Communication of Science Information; Coghill, A.M.; Garson, L. R., Eds.; Oxford University Press: Washington, DC, 2006.
  • Author-Date - a parenthetical reference including the author's last name and date of publication (Smith, 2019) are inserted into the document immediately following a fact, concept, or quoatation being cited.