The recommended list of abbreviations is much shorter (96-97); words such as are not abbreviated. If a source has three or more authors, only the first is listed, followed by et al. The term "author" is used broadly and the writer has the flexibility to deciding if a translator, performer, etc.
Here are a few of the notable changes in the works-cited-list entries from the seventh edition: 1.
In general, there is no such widespread requirement or expectation anywhere in academia.
(Perhaps a particularly unusual advisor might have such an expectation, but even then, I doubt it.) If you note the citations of research papers, a decent number of them will cite master's theses—some of my papers certainly do! And no, don't just pillage that other thesis for sources and ignore it. Your work, and those of other writers, should be treated with due consideration no matter the pedigree of the writers.
And if I can submit a paper to a major journal that cites a master's thesis, why wouldn't another student's master's thesis? That would negate the benefit of access to that thesis, which you should make available to future readers of your own thesis. Stop thinking of academia like some sort of sacred place where "students" are lesser beings.
There are no gods here; only flawed men and women with nary a grasp of purpose.
If you are looking for quick formatting answers to a basic questions about the CSE citation styles, you might find what you are looking for in this quick guide from the CSE website.
The still includes citation examples, but the examples are organized by the elements of this template: 1.
should be emphasized and used in the "author" position with the actual author being listed as an "other contributor." Use the form of the author's name given on the source.