Cita APA (7a ed.)

Srivastava, H. S., & Seshan, K. (1980). Sample unit tests in geography. National Council of Educational Research and Training.

Cita Chicago Style (17a ed.)

Srivastava, H. S., y Kamla Seshan. Sample Unit Tests in Geography. New Delhi: National Council of Educational Research and Training, 1980.

Cita MLA (9a ed.)

Srivastava, H. S., y Kamla Seshan. Sample Unit Tests in Geography. National Council of Educational Research and Training, 1980.