APA Edition Citation

Erdos, R. F. (1967). Teaching by correspondance. Longman.

Chicago Edition Citation

Erdos, Renee F. Teaching by Correspondance. London: Longman, 1967.

MLA Edition Citation

Erdos, Renee F. Teaching by Correspondance. Longman, 1967.

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