Gaya APA

Ada, G., Ramsay, A. (1997). Vacciness, Vaccination And The Immune Response . New York: Lippincott-Raven.

Gaya MLA

Ada, Gordon., Ramsay, Alistaik. "Vacciness, Vaccination And The Immune Response". New York: Lippincott-Raven, 1997. print.