Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

Krouwel, Bill. Outdoor Deyelopment. Crest, 1998.