APA aipamena

Helle, S., Lummaa, V., & Jokela, J. (2004). Accelerated immunosenescence in preindustrial twin mothers. National Academy of Sciences.

Chicago Style aipamena

Helle, Samuli, Virpi Lummaa, and Jukka Jokela. Accelerated Immunosenescence in Preindustrial Twin Mothers. National Academy of Sciences, 2004.

MLA aipamena

Helle, Samuli, Virpi Lummaa, and Jukka Jokela. Accelerated Immunosenescence in Preindustrial Twin Mothers. National Academy of Sciences, 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.