APA-referens (7:e uppl.)

Charnley, J., & Verdier, C. (2013). As time goes by: Portraits of age. Cambridge Scholars Publishing.

Chicago-referens (17:e uppl.)

Charnley, Joy, och Caroline Verdier. As Time Goes by: Portraits of Age. Newcastle upon Tyne. United Kingdom: Cambridge Scholars Publishing, 2013.

MLA-referens (9:e uppl.)

Charnley, Joy, och Caroline Verdier. As Time Goes by: Portraits of Age. Cambridge Scholars Publishing, 2013.