Cita APA (7a ed.)

Olson, K. R. (1987). An essay on facts. Center for the Study of Language and Information.

Cita Chicago Style (17a ed.)

Olson, Kenneth Russell. An Essay on Facts. Menlo Park (California): Center for the Study of Language and Information, 1987.

Cita MLA (9a ed.)

Olson, Kenneth Russell. An Essay on Facts. Center for the Study of Language and Information, 1987.