Cita APA (7a ed.)

Troup, R. S. (1955). Silvicultural systems (2d. ed.). At the Clarendon press.

Cita Chicago Style (17a ed.)

Troup, R. S. Silvicultural Systems. 2d. ed. Oxford: At the Clarendon press, 1955.

Cita MLA (8a ed.)

Troup, R. S. Silvicultural Systems. 2d. ed. At the Clarendon press, 1955.