APA (7th ed.) Citation

Seldam, R. E. J. t., & Helwig, E. B. (1974). Histological typing of skin tumours. World Health Organization.

Chicago Style (17th ed.) Citation

Seldam, Rolf Eduard J. ten, and Elson B. Helwig. Histological Typing of Skin Tumours. Geneva: World Health Organization, 1974.

MLA (9th ed.) Citation

Seldam, Rolf Eduard J. ten, and Elson B. Helwig. Histological Typing of Skin Tumours. World Health Organization, 1974.