Cita APA (7th ed.)

Roper, F. W., & Boorkman, J. A. (1994). Introduction to reference sources in the health sciences (3rd ed.). Medical Library Association.

Cita Chicago (17th ed.)

Roper, Fred Wilburn, i Jo Anne Boorkman. Introduction to Reference Sources in the Health Sciences. 3rd ed. Chicago, Ill: Medical Library Association, 1994.

Cita MLA (9th ed.)

Roper, Fred Wilburn, i Jo Anne Boorkman. Introduction to Reference Sources in the Health Sciences. 3rd ed. Medical Library Association, 1994.