Lua APA (7ú heag.)
Hruschka, D. J. (2010). Friendship: Development, ecology, and evolution of a relationship. University of California Press.
Lua i Stíl Chicago (17ú heag.)
Hruschka, Daniel J. Friendship: Development, Ecology, and Evolution of a Relationship. Berkeley: University of California Press, 2010.
Lua MLA (9ú heag.)
Hruschka, Daniel J. Friendship: Development, Ecology, and Evolution of a Relationship. University of California Press, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.