International Seminar on Theoretical Physics < 1991, Sant Felíu de Guixols, Spain>. (1992). Quantum gravity and cosmology: Proceedings of the XXIIth GIFT International Seminar on Theoretical Physics : 3-8 June 1991, Sant Feliu de Guíxols, Catalonia, Spain. World Scientific Publishing Co. Pte Ltd.
Chicago-Zitierstil (17. Ausg.)International Seminar on Theoretical Physics < 1991, Sant Felíu de Guixols, Spain>. Quantum Gravity and Cosmology: Proceedings of the XXIIth GIFT International Seminar on Theoretical Physics : 3-8 June 1991, Sant Feliu De Guíxols, Catalonia, Spain. Singapore: World Scientific Publishing Co. Pte Ltd, 1992.
MLA-Zitierstil (9. Ausg.)International Seminar on Theoretical Physics < 1991, Sant Felíu de Guixols, Spain>. Quantum Gravity and Cosmology: Proceedings of the XXIIth GIFT International Seminar on Theoretical Physics : 3-8 June 1991, Sant Feliu De Guíxols, Catalonia, Spain. World Scientific Publishing Co. Pte Ltd, 1992.