Παραπομπή APA

Robertson, D. H. (1952). Utility and all that and other essays. George Allen & Unwin.

Παραπομπή Chicago Style

Robertson, Dennish H. Utility and All That and Other Essays. London: George Allen & Unwin, 1952.

Παραπομπή MLA

Robertson, Dennish H. Utility and All That and Other Essays. George Allen & Unwin, 1952.