Remember to use only articles as specified by your professor in your work, for example, the author of any article you reference should be an anthropologist!
The articles you find on AnthroSource articles will usually be by anthropologists, but you should always double check. With the other databases listed (Anthropology Plus, etc), some articles are by anthropologists and some may not be, so remember to look.
There are some good ways to tell.
Contains ethnographic collections covering aspects of cultural and social life. Search through subject indexing at the paragraph level. Materials include books, journal articles, and dissertations.
The annually-growing eHRAF database is unique in that the information is organized and searchable by cultures/ethnic groups and the full-text sources are subject-indexed at the paragraph level. It is great for cross-cultural comparisons of customs and beliefs of groups all over the world.
Academic journals are subject-specific and may focus on specific topics within a broader discipline. Because databases are more broadly focused, you may want to look at one of these subject-specific journals when doing research on your topic as well.
Journal of Ecological Anthropology