Cita APA

Sutton, A. (1974). Wilderness areas of North America. [S.l.]: Funk & Wognall.

Citación estilo Chicago

Sutton, Ann. Wilderness Areas of North America. [S.l.]: Funk & Wognall, 1974.

Cita MLA

Sutton, Ann. Wilderness Areas of North America. [S.l.]: Funk & Wognall, 1974.