Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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