Gaya APA

Petty, J., Brown, I. (1992). Forestry, The Journal of the Institute of Chartered Foresters (Vol. 65-number 3). Oxford: Oxord University press.

Gaya MLA

Petty, J.A.., Brown, I.R.. "Forestry, The Journal of the Institute of Chartered Foresters". Vol. 65-number 3 Oxford: Oxord University press, 1992. Text.