Subject guide to reference books,
by Herbert S. Hirshberg ...
APA Citation
Hirshberg, H. S. (Herbert Simon)., American Library Association. (1942). Subject guide to reference books. Chicago: American library association.
MLA Citation
Hirshberg, Herbert S. (Herbert Simon), 1879-, and American Library Association. Subject Guide to Reference Books. Chicago: American library association, 1942.
Warning: These citations may not always be complete (especially for serials).