Cita APA (7a ed.)

Gill, R. T. (1978). Economics: A Text with Readings (3rd. ed.). Goodyear.

Cita Chicago Style (17a ed.)

Gill, Richard T. Economics: A Text with Readings. 3rd. ed. California: Goodyear, 1978.

Cita MLA (9a ed.)

Gill, Richard T. Economics: A Text with Readings. 3rd. ed. Goodyear, 1978.