Cita APA (7a ed.)

Folstein, S. E., & Rutter, M. (1977). Infantile autism: A genetic study of 21 twin pairs. The journal of child psychology and psychiatry, 18, 297-321.

Cita Chicago Style (17a ed.)

Folstein, Susan E., y Michael Rutter. "Infantile Autism: A Genetic Study of 21 Twin Pairs." The Journal of Child Psychology and Psychiatry 18 (1977): 297-321.

Cita MLA (9a ed.)

Folstein, Susan E., y Michael Rutter. "Infantile Autism: A Genetic Study of 21 Twin Pairs." The Journal of Child Psychology and Psychiatry, vol. 18, 1977, pp. 297-321.