Dyfyniad APA

Lewis, E. (1968). Marketing Channels: Structure and strategy. McGraw Hill.

Dyfyniad Arddull Chicago

Lewis, E. Marketing Channels: Structure and Strategy. New York: McGraw Hill, 1968.

Dyfyniad MLA

Lewis, E. Marketing Channels: Structure and Strategy. McGraw Hill, 1968.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.