Cita APA (7a ed.)

Hruschka, D. J. (2010). Friendship: Development, ecology, and evolution of a relationship. University of California Press.

Cita Chicago Style (17a ed.)

Hruschka, Daniel J. Friendship: Development, Ecology, and Evolution of a Relationship. Berkeley: University of California Press, 2010.

Cita MLA (8a ed.)

Hruschka, Daniel J. Friendship: Development, Ecology, and Evolution of a Relationship. University of California Press, 2010.