APA (7th ed.) Zitazioa

Khan, D. N. (1998). Quantitative methods in geographical research. Concept.

Chicago Style (17th ed.) Zitazioa

Khan, Dr.(Mrs.) Najma. Quantitative Methods in Geographical Research. New Delhi: Concept, 1998.

MLA (9th ed.) Zitazioa

Khan, Dr.(Mrs.) Najma. Quantitative Methods in Geographical Research. Concept, 1998.