Contopoulos, G., & Jappel, A. (1974). Transactions of the International Astronomical Union: Proceedings of the Fifteenth General Assembly Sydney 1973 and Extraordinary General Assembly Poland 1973. Springer Netherlands.
Chicago Style (17th ed.) CitationContopoulos, G., and A. Jappel. Transactions of the International Astronomical Union: Proceedings of the Fifteenth General Assembly Sydney 1973 and Extraordinary General Assembly Poland 1973. Dordrecht: Springer Netherlands, 1974.
MLA (9th ed.) CitationContopoulos, G., and A. Jappel. Transactions of the International Astronomical Union: Proceedings of the Fifteenth General Assembly Sydney 1973 and Extraordinary General Assembly Poland 1973. Springer Netherlands, 1974.
Warning: These citations may not always be 100% accurate.