Cita APA (7a ed.)

Wadhera, R. K., & Singh, K. (1973). Elementary geography. United Publ. House.

Cita Chicago Style (17a ed.)

Wadhera, R. K., y K. Singh. Elementary Geography. New Delhi: United Publ. House, 1973.

Cita MLA (9a ed.)

Wadhera, R. K., y K. Singh. Elementary Geography. United Publ. House, 1973.