Παραπομπή σε μορφή APA (7η εκδ.)

Crawford, R. M. M. (1989). Studies in plant survival: Ecological case histories of plant adaptation to advercity. Blackwell.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Crawford, R. M. M. Studies in Plant Survival: Ecological Case Histories of Plant Adaptation to Advercity. Oxford: Blackwell, 1989.

Παραπομπή σε μορφή MLA (9th εκδ.)

Crawford, R. M. M. Studies in Plant Survival: Ecological Case Histories of Plant Adaptation to Advercity. Blackwell, 1989.