Dyfyniad APA
Schoell, W. F. (1985). Marketing: Contemporary concepts and practices (2nd ed.). Allyn and Bacon.
Dyfyniad Arddull Chicago
Schoell, William F. Marketing: Contemporary Concepts and Practices. 2nd ed. Boston: Allyn and Bacon, 1985.
Dyfyniad MLA
Schoell, William F. Marketing: Contemporary Concepts and Practices. 2nd ed. Allyn and Bacon, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.