Cita APA (7th ed.)

Leong, G. C., & Morgan, G. C. (1982). Human and economic geography (2nd ed.). Oxford University.

Cita Chicago (17th ed.)

Leong, Goh Cheng, i Gillian C. Morgan. Human and Economic Geography. 2nd ed. Oxford: Oxford University, 1982.

Cita MLA (9th ed.)

Leong, Goh Cheng, i Gillian C. Morgan. Human and Economic Geography. 2nd ed. Oxford University, 1982.