APA

Vries P. G. d., . (1986). Sampling theory for forest inventory : a teach yourself course. New York: Springer, Verlag.

Chicago

Vries Pieter G de, . 1986. Sampling theory for forest inventory : a teach yourself course. New York: Springer, Verlag.

Harvard

Vries P. G. d., . (1986). Sampling theory for forest inventory : a teach yourself course. New York: Springer, Verlag.

MLA

Vries Pieter G de, . Sampling theory for forest inventory : a teach yourself course. New York: Springer, Verlag. 1986.