Enriguez, A. R. (2003). Green sanctuary: Former title The surveyors of the Liguasan Marsh). Giraffe Books.
Chicago-referens (17:e uppl.)Enriguez, Antonio Reyes. Green Sanctuary: Former Title The Surveyors of the Liguasan Marsh). Quezon City: Giraffe Books, 2003.
MLA-referens (9:e uppl.)Enriguez, Antonio Reyes. Green Sanctuary: Former Title The Surveyors of the Liguasan Marsh). Giraffe Books, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.