Cita APA

Becker, S. W. n. 1., & Obermayer, M. E. n. 1. (1941). Modern dermatology and syphilology. Philadelphia: Lippincott.

Citación estilo Chicago

Becker, Samuel William n. 1894, y Maximilian Ernest n. 1896 Obermayer. Modern Dermatology and Syphilology. Philadelphia: Lippincott, 1941.

Cita MLA

Becker, Samuel William n. 1894, y Maximilian Ernest n. 1896 Obermayer. Modern Dermatology and Syphilology. Philadelphia: Lippincott, 1941.