Παραπομπή APA

Thorpe, E., & Thorpe, s. (2007). General studies manual 2007. Dorling Kinderseley.

Παραπομπή Chicago Style

Thorpe, Edgar, και shwick Thorpe. General Studies Manual 2007. Delhi: Dorling Kinderseley, 2007.

Παραπομπή MLA

Thorpe, Edgar, και shwick Thorpe. General Studies Manual 2007. Dorling Kinderseley, 2007.