MLA

Trygve O. Tollefsbol, and Trygve O Tollefsbol. Epigenetics of Aging. Springer New York, 2010.

APA

Trygve O. Tollefsbol, T. O. Tollefsbol, & Tollefsbol, T. O. (2010). Epigenetics of Aging. Springer New York.

Chicago

Trygve O. Tollefsbol, and Trygve O Tollefsbol. Epigenetics of Aging. : Springer New York, 2010.