APA (7 ম সংস্করণ) উদ্ধৃতি

Ahern, C. (2011). O livro do amanhã. Presença.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Ahern, Cecelia. O Livro Do Amanhã. Presença, 2011.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Ahern, Cecelia. O Livro Do Amanhã. Presença, 2011.