Cita APA (7a ed.)

Hutchins, H. C. (1981). Examples of commutative rings (1a. ed.). Polygonal Publishing House.

Cita Chicago Style (17a ed.)

Hutchins, Harry C. Examples of Commutative Rings. 1a. ed. Trenton: Polygonal Publishing House, 1981.

Cita MLA (9a ed.)

Hutchins, Harry C. Examples of Commutative Rings. 1a. ed. Polygonal Publishing House, 1981.