APA Edition Citation

Erdos, R. F. (1967). Teaching by correspondence. Longmans.

Chicago Edition Citation

Erdos, Renée F. Teaching by Correspondence. Paris: Longmans, 1967.

MLA Edition Citation

Erdos, Renée F. Teaching by Correspondence. Longmans, 1967.

Warning: These citations may not always be 100% accurate.