APA-Zitierstil (7. Ausg.)

Campbell, D. (2018). An open door to number theory. MAA Press, an imprint of the American Mathematical Society.

Chicago-Zitierstil (17. Ausg.)

Campbell, Duff. An Open Door to Number Theory. Providence, Rhode Island: MAA Press, an imprint of the American Mathematical Society, 2018.

MLA-Zitierstil (9. Ausg.)

Campbell, Duff. An Open Door to Number Theory. MAA Press, an imprint of the American Mathematical Society, 2018.