APA (7e ed.) Bronvermelding
ROGER, Y. (1967). The Observation and guidance period. Council for cultural co-operation of the Council of Europe.
Chicago (17e ed.) Bronvermelding
ROGER, Yves. The Observation and Guidance Period. Strasbourg: Council for cultural co-operation of the Council of Europe, 1967.
MLA (9e ed.) Bronvermelding
ROGER, Yves. The Observation and Guidance Period. Council for cultural co-operation of the Council of Europe, 1967.
Let op: Deze citaties zijn niet altijd 100% accuraat.