Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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