APA (7th ed.) Citation

Colombo Plan, Colombo Plan Bureau. Information Department, Colombo Plan Bureau. Information Section, & Colombo Plan Bureau. (1970). The Colombo Plan news letter. Colombo Plan Bureau Information Dept..

Chicago Style (17th ed.) Citation

Colombo Plan, Colombo Plan Bureau. Information Department, Colombo Plan Bureau. Information Section, and Colombo Plan Bureau. The Colombo Plan News Letter. Colombo, Ceylon: Colombo Plan Bureau Information Dept., 1970.

MLA (8th ed.) Citation

Colombo Plan, et al. The Colombo Plan News Letter. Colombo Plan Bureau Information Dept., 1970.