APA (7th ed.) Citation

Invitational Conference on Testing Problems New York, N.Y., Educational Testing Service (U.S.), & Hastings, J. T. (1969). Proceedings. Educational Testing Service.

Chicago Style (17th ed.) Citation

Invitational Conference on Testing Problems New York, N.Y., Educational Testing Service (U.S.), and J. Thomas Hastings. Proceedings. Princeton, N.J.: Educational Testing Service, 1969.

MLA (8th ed.) Citation

Invitational Conference on Testing Problems New York, N.Y., et al. Proceedings. Educational Testing Service, 1969.