APA (7e ed.) Bronvermelding

THOMAS ISABEL. (2019). BEAKY'S GUIDE TO CARING FOR YOUR BIRDS (2018 Ed.). PICTURE WINDOW BOOKS.

Chicago (17e ed.) Bronvermelding

THOMAS ISABEL. BEAKY'S GUIDE TO CARING FOR YOUR BIRDS. 2018 Ed. CHICAGO: PICTURE WINDOW BOOKS, 2019.

MLA (9e ed.) Bronvermelding

THOMAS ISABEL. BEAKY'S GUIDE TO CARING FOR YOUR BIRDS. 2018 Ed. PICTURE WINDOW BOOKS, 2019.