Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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