APA (7 ম সংস্করণ) উদ্ধৃতি

Jackie Gaff. (2005). I Wonder Why Pine Trees Have Needles: And Other Questions About Forests. Gardners Books.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Jackie Gaff. I Wonder Why Pine Trees Have Needles: And Other Questions About Forests. Gardners Books, 2005.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Jackie Gaff. I Wonder Why Pine Trees Have Needles: And Other Questions About Forests. Gardners Books, 2005.