Fraser, J. T. (1975). The study of time II. Berlin [u.a.].
Chicago Style aipamenaFraser, J. T. The Study of Time II. Berlin [u.a.], 1975.
MLA aipamenaFraser, J. T. The Study of Time II. Berlin [u.a.], 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.