Cita APA (7a ed.)

Hale, B. (1988). Abstract objects. Basil Blackwell.

Cita Chicago Style (17a ed.)

Hale, Bob. Abstract Objects. Oxford [etc.]: Basil Blackwell, 1988.

Cita MLA (9a ed.)

Hale, Bob. Abstract Objects. Basil Blackwell, 1988.