Wasserman, P., & Grefsheim, S. (1987). Encyclopedia of health information sources: A bibliographic guide to approximately 13,000 citations for publications, organizations, and other sources of information on more than 450 health-related subjects . Gale Research.
Cita Chicago (17th ed.)Wasserman, Paul, i Suzanne Grefsheim. Encyclopedia of Health Information Sources: A Bibliographic Guide to Approximately 13,000 Citations for Publications, Organizations, and Other Sources of Information on More than 450 Health-related Subjects . Detroit, MI: Gale Research, 1987.
Cita MLA (9th ed.)Wasserman, Paul, i Suzanne Grefsheim. Encyclopedia of Health Information Sources: A Bibliographic Guide to Approximately 13,000 Citations for Publications, Organizations, and Other Sources of Information on More than 450 Health-related Subjects . Gale Research, 1987.