APA (7th ed.) Citation

International Geographical Union & International Geographical Union. (1969). IGU bulletin =: Bulletin de l'UGI. International Geographical Union.

Chicago Style (17th ed.) Citation

International Geographical Union and International Geographical Union. IGU Bulletin =: Bulletin De L'UGI. Bristol: International Geographical Union, 1969.

MLA (8th ed.) Citation

International Geographical Union and International Geographical Union. IGU Bulletin =: Bulletin De L'UGI. International Geographical Union, 1969.

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