Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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