Παραπομπή σε μορφή APA (7η εκδ.)

Sitwell, O. F. G. (1993). Four centuries of special geography: An annotated guide to books that purport to describe all the countries in the world published in English before 1888, with a critical introduction. UBC Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Sitwell, O. F. G. Four Centuries of Special Geography: An Annotated Guide to Books That Purport to Describe All the Countries in the World Published in English Before 1888, with a Critical Introduction. Vancouver: UBC Press, 1993.

Παραπομπή σε μορφή MLA (9th εκδ.)

Sitwell, O. F. G. Four Centuries of Special Geography: An Annotated Guide to Books That Purport to Describe All the Countries in the World Published in English Before 1888, with a Critical Introduction. UBC Press, 1993.