APA
Ahirrao W. R., Varat T., Dhapte C. S. & Alizad S. S. (1991). Principles of human geography. Pune: Nirali Prakashan.
Chicago
Ahirrao W R, Varat T.M, Dhapte C S and Alizad S S. 1991. Principles of human geography. Pune: Nirali Prakashan.
Harvard
Ahirrao W. R., Varat T., Dhapte C. S. and Alizad S. S. (1991). Principles of human geography. Pune: Nirali Prakashan.
MLA
Ahirrao W R, Varat T.M, Dhapte C S and Alizad S S. Principles of human geography. Pune: Nirali Prakashan. 1991.