APA (7 वां संस्करण) प्रशस्ति पत्र

Hospers, J. (1971). Libertarianism, A political philosophy for tomorrow (Primera edición.). Reason Press.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Hospers, John. Libertarianism, A Political Philosophy for Tomorrow. Primera edición. Santa Bárbara: Reason Press, 1971.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Hospers, John. Libertarianism, A Political Philosophy for Tomorrow. Primera edición. Reason Press, 1971.