Sawyer, W. W. (1943). Mathematician's delight. New York: Penguin Books.
Trích dẫn kiểu ChicagoSawyer, W. W. Mathematician's Delight. New York: Penguin Books, 1943.
Deismireacht MLASawyer, W. W. Mathematician's Delight. New York: Penguin Books, 1943.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.