APA (7e ed.) Bronvermelding
Tressler, J. C. (1950). English in action: Course three. (5a. ed.). D. C. Heath and Company.
Chicago (17e ed.) Bronvermelding
Tressler, J. C. English in Action: Course Three. 5a. ed. Estados Unidos: D. C. Heath and Company, 1950.
MLA (9e ed.) Bronvermelding
Tressler, J. C. English in Action: Course Three. 5a. ed. D. C. Heath and Company, 1950.
Let op: Deze citaties zijn niet altijd 100% accuraat.