Cita APA (7th ed.)

Stewart, J. (2008). Heiberg's Contingency regarded from the point of view of logic and other texts. Museum Tusculanum Press.

Cita Chicago (17th ed.)

Stewart, Jon. Heiberg's Contingency Regarded from the Point of View of Logic and Other Texts. Copenhagen, Denmark: Museum Tusculanum Press, 2008.

Cita MLA (9th ed.)

Stewart, Jon. Heiberg's Contingency Regarded from the Point of View of Logic and Other Texts. Museum Tusculanum Press, 2008.