APA (7th ed.) Citation

International Congress on Twin Studies 2 1977, Washington, DC, & Nance, W. E. (1978). Twin research: Proceedings of the 2. International Congress on Twin Studies Aug. 29 - Sept. 1, 1977 Washington, D.C. Liss.

Chicago Style (17th ed.) Citation

International Congress on Twin Studies 2 1977, Washington, DC, and Walter E. Nance. Twin Research: Proceedings of the 2. International Congress on Twin Studies Aug. 29 - Sept. 1, 1977 Washington, D.C. New York: Liss, 1978.

MLA (9th ed.) Citation

International Congress on Twin Studies 2 1977, Washington, DC, and Walter E. Nance. Twin Research: Proceedings of the 2. International Congress on Twin Studies Aug. 29 - Sept. 1, 1977 Washington, D.C. Liss, 1978.