APA (7th ed.) Citation

International Astronomical Union. (1962). Proceedings of the ... general assembly. Transactions of the International Astronomical Union.

Chicago Style (17th ed.) Citation

International Astronomical Union. "Proceedings of the ... General Assembly." Transactions of the International Astronomical Union 1962.

MLA (9th ed.) Citation

International Astronomical Union. "Proceedings of the ... General Assembly." Transactions of the International Astronomical Union, 1962.

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