Cita APA (7a ed.)

Heap, S. P. H. (1992). The theory of choice: A critical guide. Blackwell.

Cita Chicago Style (17a ed.)

Heap, Shaun P. Hargreaves. The Theory of Choice: A Critical Guide. Oxford: Blackwell, 1992.

Cita MLA (9a ed.)

Heap, Shaun P. Hargreaves. The Theory of Choice: A Critical Guide. Blackwell, 1992.