Cita APA (7th ed.)

Flowers, T. H. (1976). Introduction to exchange systems. John Wiley.

Cita Chicago (17th ed.)

Flowers, T. H. Introduction to Exchange Systems. Londres: John Wiley, 1976.

Cita MLA (9th ed.)

Flowers, T. H. Introduction to Exchange Systems. John Wiley, 1976.