APA (7th ed.) Citation

(1991). String theory and quantum gravity: Proceedings of the Trieste Spring School, 23 April - 1 May 1990. World Scientific.

Chicago Style (17th ed.) Citation

String Theory and Quantum Gravity: Proceedings of the Trieste Spring School, 23 April - 1 May 1990. Singapore u.a: World Scientific, 1991.

MLA (9th ed.) Citation

String Theory and Quantum Gravity: Proceedings of the Trieste Spring School, 23 April - 1 May 1990. World Scientific, 1991.

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