Cita APA (7a ed.)

(1978). Twin research. Twin research proceedings of the 2. International Congress on Twin Studies Aug. 29 - Sept. 1, 1977 Washington, D.C..

Cita Chicago Style (17a ed.)

"Twin Research." Twin Research Proceedings of the 2. International Congress on Twin Studies Aug. 29 - Sept. 1, 1977 Washington, D.C. 1978.

Cita MLA (8a ed.)

"Twin Research." Twin Research Proceedings of the 2. International Congress on Twin Studies Aug. 29 - Sept. 1, 1977 Washington, D.C., 1978.