APA-referens (7:e uppl.)
Erkenbrecher, C. (2011). The "Hitchhiker's guide to the galaxy" revisited: Motifs of science fiction and social criticism. Diplomica Verlag.
Chicago-referens (17:e uppl.)
Erkenbrecher, Christian. The "Hitchhiker's Guide to the Galaxy" Revisited: Motifs of Science Fiction and Social Criticism. Hamburg: Diplomica Verlag, 2011.
MLA-referens (9:e uppl.)
Erkenbrecher, Christian. The "Hitchhiker's Guide to the Galaxy" Revisited: Motifs of Science Fiction and Social Criticism. Diplomica Verlag, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.