Burger, J., & Zappalorti, R. T. (2011). The northern pine snake (pituophis melanoleucus): Its life history, behavior and conservation. Nova Science Publishers.
Lua i Stíl Chicago (17ú heag.)Burger, Joanna, agus Robert T. Zappalorti. The Northern Pine Snake (pituophis Melanoleucus): Its Life History, Behavior and Conservation. Hauppauge, N.Y.: Nova Science Publishers, 2011.
Lua MLA (9ú heag.)Burger, Joanna, agus Robert T. Zappalorti. The Northern Pine Snake (pituophis Melanoleucus): Its Life History, Behavior and Conservation. Nova Science Publishers, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.