Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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