Citazione APA

Ellefson, P. V. (1992). Forest resources policy: Process, participants and programs. McGraw Hill.

Stile di citazione Chicago

Ellefson, Paul V. Forest Resources Policy: Process, Participants and Programs. New York: McGraw Hill, 1992.

Citazione MLA

Ellefson, Paul V. Forest Resources Policy: Process, Participants and Programs. McGraw Hill, 1992.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.