APA (7e ed.) Bronvermelding

Pickering, G. W. (1967). The challenge to education. Watts.

Chicago (17e ed.) Bronvermelding

Pickering, George White. The Challenge to Education. London: Watts, 1967.

MLA (8e ed.) Bronvermelding

Pickering, George White. The Challenge to Education. Watts, 1967.