Cita APA (7a ed.)

Hoppe, R. A., & Simmel, E. C. (1969). Book Tearing and the Bystander in the University Library.

Cita Chicago Style (17a ed.)

Hoppe, Ronald A., y Edward C. Simmel. Book Tearing and the Bystander in the University Library. 1969.

Cita MLA (9a ed.)

Hoppe, Ronald A., y Edward C. Simmel. Book Tearing and the Bystander in the University Library. 1969.