Cita APA (7th ed.)

Carrion, J. A. (1973). Introduction to marketing imperatives. [s. n.].

Cita Chicago (17th ed.)

Carrion, Juan Antonio. Introduction to Marketing Imperatives. Manila: [s. n.], 1973.

Cita MLA (9th ed.)

Carrion, Juan Antonio. Introduction to Marketing Imperatives. [s. n.], 1973.