Παραπομπή APA

Detjen, E. W., & Detjen, M. F. Elementary school guidence.

Παραπομπή Chicago Style

Detjen, Ervin Winfred, και Mary Ford Detjen. Elementary School Guidence.

Παραπομπή MLA

Detjen, Ervin Winfred, και Mary Ford Detjen. Elementary School Guidence.