APA استشهاد

Krouwel, B. (1998). Outdoor Deyelopment. Crest.

استشهاد بنمط شيكاغو

Krouwel, Bill. Outdoor Deyelopment. New Delhi: Crest, 1998.

MLA استشهاد

Krouwel, Bill. Outdoor Deyelopment. Crest, 1998.