Gray, J. (2013). Venus on fire mars on ice: The Key to Love, Life and Energy. Pralibris Publishing Media.
Lua i Stíl Chicago (17ú heag.)Gray, John. Venus on Fire Mars on Ice: The Key to Love, Life and Energy. Conquitlam: Pralibris Publishing Media, 2013.
Lua MLA (9ú heag.)Gray, John. Venus on Fire Mars on Ice: The Key to Love, Life and Energy. Pralibris Publishing Media, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.