Cita APA

Kelsall, R. K. 1. (1972). Population (Second edition.). London: Longman.

Citación estilo Chicago

Kelsall, Roger Keith 1910-. Population. Second edition. London: Longman, 1972.

Cita MLA

Kelsall, Roger Keith 1910-. Population. Second edition. London: Longman, 1972.