Paul, E. C. (1974). The viability of Singapore: An aspect of modern political geography. University Microfilms International.
Citação norma ChicagoPaul, Erik Charles. The Viability of Singapore: An Aspect of Modern Political Geography. Ann Arbor: University Microfilms International, 1974.
Citação norma MLAPaul, Erik Charles. The Viability of Singapore: An Aspect of Modern Political Geography. University Microfilms International, 1974.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.