APA
George K. Hirst, . (21999). Virology. New York: Academic Press.
Chicago
George K. Hirst, . 21999. Virology. New York: Academic Press.
Harvard
George K. Hirst, . (21999). Virology. New York: Academic Press.
MLA
George K. Hirst, . Virology. New York: Academic Press. 21999.