Παραπομπή σε μορφή APA (7η εκδ.)

Murphy, S., Longhitano, C., Ayres, R., Cowen, P., & Harmer, C. (2006). Tryptophan supplementation induces a positive bias in the processing of emotional material in healthy female volunteers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Murphy, SE, C. Longhitano, R. Ayres, P. Cowen, και C. Harmer. Tryptophan Supplementation Induces a Positive Bias in the Processing of Emotional Material in Healthy Female Volunteers. 2006.

Παραπομπή σε μορφή MLA (9th εκδ.)

Murphy, SE, et al. Tryptophan Supplementation Induces a Positive Bias in the Processing of Emotional Material in Healthy Female Volunteers. 2006.