APA-referens (7:e uppl.)

(1987). To engineer is human / written & presented by Henry Petroski.

Chicago-referens (17:e uppl.)

To Engineer Is Human / Written & Presented by Henry Petroski. 1987.

MLA-referens (9:e uppl.)

To Engineer Is Human / Written & Presented by Henry Petroski. 1987.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.