APA (7th ed.) Citation

Congress Geographique Iternational. (1968). 21st International Geographical Congress India 1968 = XXIe Congrès Géographique International Inde 1968. National Committee for Geography.

Chicago Style (17th ed.) Citation

Congress Geographique Iternational. 21st International Geographical Congress India 1968 = XXIe Congrès Géographique International Inde 1968. Calcutta: National Committee for Geography, 1968.

MLA (9th ed.) Citation

Congress Geographique Iternational. 21st International Geographical Congress India 1968 = XXIe Congrès Géographique International Inde 1968. National Committee for Geography, 1968.

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