APA (7e ed.) Bronvermelding

Bossing, N. L. (1944). Progressive methods of teaching in secondary school. Houghton Mifflin.

Chicago (17e ed.) Bronvermelding

Bossing, Nelson L. Progressive Methods of Teaching in Secondary School. Houghton Mifflin, 1944.

MLA (9e ed.) Bronvermelding

Bossing, Nelson L. Progressive Methods of Teaching in Secondary School. Houghton Mifflin, 1944.

Let op: Deze citaties zijn niet altijd 100% accuraat.