APA aipamena

Fletcher, M. A., Zeng, X. R., Barnes, Z., Levis, S., & Klimas, N. G. (2009). Plasma cytokines in women with chronic fatigue syndrome. BioMed Central.

Chicago Style aipamena

Fletcher, Mary Ann, Xiao Rong Zeng, Zachary Barnes, Silvina Levis, and Nancy G. Klimas. Plasma Cytokines in Women With Chronic Fatigue Syndrome. BioMed Central, 2009.

MLA aipamena

Fletcher, Mary Ann, et al. Plasma Cytokines in Women With Chronic Fatigue Syndrome. BioMed Central, 2009.