APA (7e ed.) Bronvermelding

Clementson Th. Theresa. (2006). Natural English. Reading Writing Skills: Elementary resource book. New York, Oxford University Press, 2006.

Chicago (17e ed.) Bronvermelding

Clementson Th. Theresa. Natural English. Reading Writing Skills: Elementary Resource Book. New York, Oxford University Press, 2006, 2006.

MLA (9e ed.) Bronvermelding

Clementson Th. Theresa. Natural English. Reading Writing Skills: Elementary Resource Book. New York, Oxford University Press, 2006, 2006.