APA (7e ed.) Bronvermelding
Est, W. T. v. (1950). A Generalization of a theorem of J.Nielsen concerning hyperbolic groups.
Chicago (17e ed.) Bronvermelding
Est, Willem Titus van. A Generalization of a Theorem of J.Nielsen Concerning Hyperbolic Groups. Utrecht, 1950.
MLA (9e ed.) Bronvermelding
Est, Willem Titus van. A Generalization of a Theorem of J.Nielsen Concerning Hyperbolic Groups. 1950.
Let op: Deze citaties zijn niet altijd 100% accuraat.