Swift, J., & Boulat, P. (1981). El Sahara (2nd Spanish printing.). Time-Life.
Cita Chicago Style (17a ed.)Swift, Jeremy, y Pierre Boulat. El Sahara. 2nd Spanish printing. Amsterdam: Time-Life, 1981.
Cita MLA (9a ed.)Swift, Jeremy, y Pierre Boulat. El Sahara. 2nd Spanish printing. Time-Life, 1981.
Precaución: Estas citas no son 100% exactas.