Gaya APA

Behnke, J, A., [et.al], I, H, H, O. (1972). Challenging biological problems directions toward their solution . New York: New York: Oxford University Press; 1972.

Gaya MLA

Behnke, John, A.., [et.al], I., Halvorson,, Harlyn, O. "Challenging biological problems directions toward their solution". New York: New York: Oxford University Press; 1972, 1972. Text.