Cita APA (7a ed.)

Casellas, E. (1972). Library of Congress Proof Slips. The Overlooked Selection Medium for Business Libraries.

Cita Chicago Style (17a ed.)

Casellas, Elizabeth. Library of Congress Proof Slips. The Overlooked Selection Medium for Business Libraries. 1972.

Cita MLA (9a ed.)

Casellas, Elizabeth. Library of Congress Proof Slips. The Overlooked Selection Medium for Business Libraries. 1972.