Cita APA (7a ed.)

Park, S., Coull, J., McShane, R., Young, A., Sahakian, B., Robbins, T., & Cowen, P. (1994). Tryptophan depletion in normal volunteers produces selective impairments in learning and memory.

Cita Chicago Style (17a ed.)

Park, S., J. Coull, R. McShane, A. Young, B. Sahakian, T. Robbins, y P. Cowen. Tryptophan Depletion in Normal Volunteers Produces Selective Impairments in Learning and Memory. 1994.

Cita MLA (9a ed.)

Park, S., et al. Tryptophan Depletion in Normal Volunteers Produces Selective Impairments in Learning and Memory. 1994.