Cita APA (7th ed.)
Schoell, W. F. (1990). Marketing: Annotated Instructor's edition;Contemporary Concepts and Practices (4th ed.). Allyn and Bacon.
Cita Chicago (17th ed.)
Schoell, William F. Marketing: Annotated Instructor's Edition;Contemporary Concepts and Practices. 4th ed. Boston: Allyn and Bacon, 1990.
Cita MLA (9th ed.)
Schoell, William F. Marketing: Annotated Instructor's Edition;Contemporary Concepts and Practices. 4th ed. Allyn and Bacon, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.