APA引文

Paul, E. C. (1975). Viability of Singapore: An aspect of modern political geography. University Microfilms International.

Chicago Style (17th ed.) Citation

Paul, E. C. Viability of Singapore: An Aspect of Modern Political Geography. Ann Arbor, Mich.: University Microfilms International, 1975.

MLA引文

Paul, E. C. Viability of Singapore: An Aspect of Modern Political Geography. University Microfilms International, 1975.