APA
Leong G. C., Morgan G. C., . (1975). Human and Economic Geography. Hong Kong: Oxford University Press.
Chicago
Leong Goh Cheng, Morgan Gillian C, . 1975. Human and Economic Geography. Hong Kong: Oxford University Press.
Harvard
Leong G. C., Morgan G. C., . (1975). Human and Economic Geography. Hong Kong: Oxford University Press.
MLA
Leong Goh Cheng, Morgan Gillian C, . Human and Economic Geography. Hong Kong: Oxford University Press. 1975.