For most classes, you will probably use one of the major style manuals listed on the previous pages to format any citations or papers.
However, some professors may ask you to instead use the style of a specific journal (for example, CELL or NEURON). These journal styles are often based on another established style, but contain specific variations which reflect the preferences of that specific journal and its editors. Because the style is unique to each journal, you will rarely find a published citation manual like you might come across for, e.g., APA or MLA style.
So how do you follow a journal style?
Journal styles are designed for the use of authors publishing in the journal and their editors. Therefore, the best place to find style guidance will be on the individual journal's website. Most journals will have an area on their website dedicated to prospective authors, which will be titled something like Information for Authors (NEURON), For Authors or Author Instructions (CELL). You will typically find the information you need in a section with a title like "Manuscript Preparation," "Preparation of Specific Sections" or "Article Specifications." Feel free to ask for help if you are unable to locate the appropriate style information.
Be sure to pay attention to all of the details of the style guidelines. In addition to citation examples, this section of the website will usually include information about general rules for things like capitalization, handling sources with a large number of authors, properly executing in-text citations, etc.
Citation Managers
Once you are comfortable using a specific style format, you can also use a Citation Manager like RefWorks to cite in journal style. Most reference managers include the styles of many major (and some not-so-major) journals among the options available to you.