The citation style you use depends on a variety of factors. Many disciplines tend to use one particular style over another. Your instructors may require you use a certain style, so ask about which manual to use before you start your research. If you are publishing one of your works, your editor may require that you use a certain style.
If you aren't required to use a specific style, use one that you are comfortable with and that best fits your needs. Just follow the guidelines and be consistent.
Selected books that may be of help in your writing
Chemical Information for Chemists by
While it is not difficult to find data in many cases, what advice can you get on the quality of the data retrieved? Chemical Information for Chemists could help with this problem and more. This book is a chemical information book aimed specifically at practicing chemists. Written and edited by experts in the field, it is ideal for chemists who lack a chemical information professional able to teach basic and intermediate techniques in retrieving and evaluating information using the unique entry points of the chemical literature, including structure, formula, substructure, and sequence. Aimed at students on undergraduate and graduate courses, it could also be a useful guide to new information specialists who are facing the challenging diversity of chemical literature.
A Short Guide to Writing about Chemistry by 
