APA (7th ed.) Citation

Callen, J. P. (2003). Dermatological signs of internal disease (3rd ed.). Saunders.

Chicago Style (17th ed.) Citation

Callen, Jeffrey P. Dermatological Signs of Internal Disease. 3rd ed. London: Saunders, 2003.

MLA (9th ed.) Citation

Callen, Jeffrey P. Dermatological Signs of Internal Disease. 3rd ed. Saunders, 2003.