Παραπομπή APA

SnodgrassR E. (1968). Insects-their ways and mean of living. Dover.

Παραπομπή Chicago Style

SnodgrassR E. Insects-their Ways and Mean of Living. Dover, 1968.

Παραπομπή MLA

SnodgrassR E. Insects-their Ways and Mean of Living. Dover, 1968.