Cita APA (7th 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 (17th ed.)

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

Cita MLA (9th ed.)

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