Cita APA (7a ed.)

Ladyman, P. (1969). Frog - stickleback and pond snail. Methuen.

Cita Chicago Style (17a ed.)

Ladyman, Phyllis. Frog - Stickleback and Pond Snail. London: Methuen, 1969.

Cita MLA (9a ed.)

Ladyman, Phyllis. Frog - Stickleback and Pond Snail. Methuen, 1969.