Cita APA (7a ed.)

Harp, V., & Heard, G. (1974). Automated Periodicals System at a Community College Library.

Cita Chicago Style (17a ed.)

Harp, Vivian, y Gertrude Heard. Automated Periodicals System at a Community College Library. 1974.

Cita MLA (9a ed.)

Harp, Vivian, y Gertrude Heard. Automated Periodicals System at a Community College Library. 1974.