There are thousands of publishers, and it is impossible to know the reputations of all of them. In general, if the publisher is a university press, such as Oxford University Press, the source is scholarly. Other publishers have excellent reputations and are well known in certain disciplines.
To find more information about a particular publisher, do a Google search using the publisher name in quotation marks. For example, "Neal-Schuman Publishers." Hint: Sometimes journal articles are published by professional organizations such as the Association of College and Research Libraries.