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.). 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: University of Massachusetts Press, 1981.

Παραπομπή σε μορφή MLA (8th 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. University of Massachusetts Press, 1981.