Παραπομπή APA

Singh, L. (1981). New perspectives in geography. Thinker's Library.

Παραπομπή Chicago Style

Singh, L.R. New Perspectives in Geography. Allahabad: Thinker's Library, 1981.

Παραπομπή MLA

Singh, L.R. New Perspectives in Geography. Thinker's Library, 1981.