APA (7e ed.) Bronvermelding

Sien, C. M. A. &. C. L. (1979). DEVELOPING ECONOMIES AND THE ENVIRONMENT; THE SOUTHEAST ASIAN EXPRIENCE. McGraw-hill International.

Chicago (17e ed.) Bronvermelding

Sien, Colin Mc Andrews & Chia Lin. DEVELOPING ECONOMIES AND THE ENVIRONMENT; THE SOUTHEAST ASIAN EXPRIENCE. McGraw-hill International, 1979.

MLA (8e ed.) Bronvermelding

Sien, Colin Mc Andrews & Chia Lin. DEVELOPING ECONOMIES AND THE ENVIRONMENT; THE SOUTHEAST ASIAN EXPRIENCE. McGraw-hill International, 1979.