Παραπομπή σε μορφή APA (7η εκδ.)

Wiktor, A. (2001). The slugs of Greece (Arionidae, Milacidae, Limacidae, Agriolimacidae - Gastropoda, Stylommatophora). Natural History Museum of Crete, University of Crete.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Wiktor, Andrzej. The Slugs of Greece (Arionidae, Milacidae, Limacidae, Agriolimacidae - Gastropoda, Stylommatophora). Irakleio: Natural History Museum of Crete, University of Crete, 2001.

Παραπομπή σε μορφή MLA (9th εκδ.)

Wiktor, Andrzej. The Slugs of Greece (Arionidae, Milacidae, Limacidae, Agriolimacidae - Gastropoda, Stylommatophora). Natural History Museum of Crete, University of Crete, 2001.