APA
Huntley B. J., Siegfried W. R. & Sunter C. (1989). South African environments into the 21st century. Cape Town: Human & Rousseau.
Chicago
Huntley B J, Siegfried W R and Sunter Clem. 1989. South African environments into the 21st century. Cape Town: Human & Rousseau.
Harvard
Huntley B. J., Siegfried W. R. and Sunter C. (1989). South African environments into the 21st century. Cape Town: Human & Rousseau.
MLA
Huntley B J, Siegfried W R and Sunter Clem. South African environments into the 21st century. Cape Town: Human & Rousseau. 1989.