APA aipamena

Shepard, S. (1975). Action and the unseen hand. Faber&Faber.

Chicago Style aipamena

Shepard, Sam,1943-. Action and the Unseen Hand. London: Faber&Faber, 1975.

MLA aipamena

Shepard, Sam,1943-. Action and the Unseen Hand. Faber&Faber, 1975.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.