-. American Association University Professors Bulletin, Vol. 41, Number 2, Summer 1955. American Association University Professors.
Chicago (17e ed.) Bronvermelding-. American Association University Professors Bulletin, Vol. 41, Number 2, Summer 1955. American Association University Professors.
MLA (8e ed.) Bronvermelding-. American Association University Professors Bulletin, Vol. 41, Number 2, Summer 1955. American Association University Professors.
Let op: Deze citaties zijn niet altijd 100% accuraat.