Gaya APA

Koelen, M, A., Ban, A, W, V, D. (2004). Health Education and Health Promotion . The Netherlands: Wageningen Academic eningen Academic Publishers.

Gaya MLA

Koelen, Maria, A.., Ban, Anne, W., Van, Den. "Health Education and Health Promotion". The Netherlands: Wageningen Academic eningen Academic Publishers, 2004. Electronic Resource.