Cita APA (7th ed.)

Pepper, T., & Hoppé, E. O. (1978). Camera portraits by E. O. Hoppé, 1878 - 1972.

Cita Chicago (17th ed.)

Pepper, Terence, i Emil Otto Hoppé. Camera Portraits by E. O. Hoppé, 1878 - 1972. London, 1978.

Cita MLA (8th ed.)

Pepper, Terence, i Emil Otto Hoppé. Camera Portraits by E. O. Hoppé, 1878 - 1972. 1978.