Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service) & Lier, L. v. (2004). The Ecology and Semiotics of Language Learning: A Sociocultural Perspective. Springer Netherlands.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service) και Leo van Lier. The Ecology and Semiotics of Language Learning: A Sociocultural Perspective. Dordrecht: Springer Netherlands, 2004.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service) και Leo van Lier. The Ecology and Semiotics of Language Learning: A Sociocultural Perspective. Springer Netherlands, 2004.