APA Баримт

Erdos R. F. (1967). Teaching by correspondence: A study undertaken / by Renée F. Erdos. Longmans: UNESCO.

Чикаго маягийн жагсаалт

Erdos R. F. Teaching by Correspondence: A Study Undertaken / by Renée F. Erdos. London ; Paris: Longmans: UNESCO, 1967.

MLA ишлэл

Erdos R. F. Teaching by Correspondence: A Study Undertaken / by Renée F. Erdos. Longmans: UNESCO, 1967.

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