توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

THEORIES OF LANDFORM.., MELHORN, W. N. [., & FLEMAL, R. C. [. (1981). Theories of landform development/editor Wilton N. Melhorn; Ronald C. Flemal. George Allen and Unwin.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

THEORIES OF LANDFORM.., Wilton N. [ed] MELHORN, و Ronald C. [ed] FLEMAL. Theories of Landform Development/editor Wilton N. Melhorn; Ronald C. Flemal. London: George Allen and Unwin, 1981.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

THEORIES OF LANDFORM.., et al. Theories of Landform Development/editor Wilton N. Melhorn; Ronald C. Flemal. George Allen and Unwin, 1981.