Gaya APA

Speight, T, M., Holford, N, H, C. (1997). Avery's Drug Treatment (4th. ed.). New Zealand: Adis Health Sciences Press.

Gaya MLA

Speight, Trevor, M.., Holford, Nicholas, H., C.. "Avery's Drug Treatment". 4th. ed. New Zealand: Adis Health Sciences Press, 1997. Text.