Gaya APA

Hellman, S., DeVita, V, T. (1989). Cancer: Principlrs Practice of Oncology (3rd ed). Philadelphia: J.B. Lippincott.

Gaya MLA

Hellman, Samuel., DeVita, Vincent, T. "Cancer: Principlrs Practice of Oncology". 3rd ed Philadelphia: J.B. Lippincott, 1989. print.