APA (7th ed.) Citation

International Gondwana Symposium, Ulbrich, H., & Rocha Campos, A. C. (1991). Gondwana seven: Proceedings : papers presented at the Seventh International Gondwana Symposium. Instituto de Geociências-USP.

Chicago Style (17th ed.) Citation

International Gondwana Symposium, H. Ulbrich, and A. C. Rocha Campos. Gondwana Seven: Proceedings : Papers Presented at the Seventh International Gondwana Symposium. São Paulo: Instituto de Geociências-USP, 1991.

MLA (8th ed.) Citation

International Gondwana Symposium, et al. Gondwana Seven: Proceedings : Papers Presented at the Seventh International Gondwana Symposium. Instituto de Geociências-USP, 1991.