APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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