Gaya APA

Vakil, K, S, K, B, P, R. (2002). The William Lowell Putnam mathematical competition 1985-2000 : problems, solutions, and commentary . United State of America: The Mathematical Assoiation of America (Incorporated).

Gaya MLA

Vakil, Kiran, S., Kedlaya,, Bjorn, Poonen,, Ravi. "The William Lowell Putnam mathematical competition 1985-2000 : problems, solutions, and commentary". United State of America: The Mathematical Assoiation of America (Incorporated), 2002. Text.