APA

Heap S. H., . (1992). The theory of choice. Oxford, UK [u.a.]: Blackwell.

Chicago

Heap Shaun Hargreaves, . 1992. The theory of choice. Oxford, UK [u.a.]: Blackwell.

Harvard

Heap S. H., . (1992). The theory of choice. Oxford, UK [u.a.]: Blackwell.

MLA

Heap Shaun Hargreaves, . The theory of choice. Oxford, UK [u.a.]: Blackwell. 1992.