Cita APA (7a ed.)

Gethin, R., & Mackin, R. (1969). Zoology and botany. Oxford University.

Cita Chicago Style (17a ed.)

Gethin, R.H, y Ronald Mackin. Zoology and Botany. London: Oxford University, 1969.

Cita MLA (8a ed.)

Gethin, R.H, y Ronald Mackin. Zoology and Botany. Oxford University, 1969.