Gaya APA

Marrin, A. (2002). Dr.Jenner and the speakled monster : the search for the smallpox vaccine . New York: Dutton Children`s Books.

Gaya MLA

Marrin, Albert. "Dr.Jenner and the speakled monster : the search for the smallpox vaccine". New York: Dutton Children`s Books, 2002. Text.