Παραπομπή σε μορφή APA (7η εκδ.)

Fraser, J. T. (1981). The voices of time: A cooperative survey of man's views of time as expressed by the sciences and by the humanities (2nd ed.). The University of Massachusetts Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Fraser, J. T. The Voices of Time: A Cooperative Survey of Man's Views of Time as Expressed by the Sciences and by the Humanities. 2nd ed. Amherst: The University of Massachusetts Press, 1981.

Παραπομπή σε μορφή MLA (9th εκδ.)

Fraser, J. T. The Voices of Time: A Cooperative Survey of Man's Views of Time as Expressed by the Sciences and by the Humanities. 2nd ed. The University of Massachusetts Press, 1981.