Your lab reports should be submitted in the format of a Communication published in JACS (the Journal of the American Chemical Society). According to the JACS Author Guidelines (linked above), "Authors should consult The ACS Style Guide, 3rd ed.; American Chemical Society: Washington, DC, 2006, for the appropriate style to use in citations of journal papers, books, and other publications. In literature references, article titles must be included and journal abbreviations should be those used in the Chemical Abstracts Service Source Index (CASSI)."
Download the JACS manuscript template and use it as the basis for formatting your lab reports.
A practical way to write, share and add citations to your lab report is to:
1. You can draft your report with your lab partner(s) in Google Drive to make sharing easier
2. Copy and paste your text into the Word Doc template
3. Add citations at the end, once you have finished writing your report.
4. Turn in your report in Word Doc format using the template
Looking at recent JACS Communications is helpful for understanding the formatting and style requirements. At the link above, click on an issue of JACS, then scroll down to the "Communications" heading to view communications. IMPORTANT NOTE: Starting with the December 26, 2018 issue of JACS, communications are formatted so that the references lists include article titles. Earlier references lists skip titles and simply include the author names, year of publication, journal title, etc.
This comprehensive and regularly-updated resource includes guidelines and advice related to writing and publishing research in chemistry and related fields. Section 4.3 of this guide covers citation in ACS Style.