APA (7e ed.) Bronvermelding
Robertson, J. (1978). The sane alternative: Signposts to a self-fulfilling future. The author.
Chicago (17e ed.) Bronvermelding
Robertson, James. The Sane Alternative: Signposts to a Self-fulfilling Future. London: The author, 1978.
MLA (9e ed.) Bronvermelding
Robertson, James. The Sane Alternative: Signposts to a Self-fulfilling Future. The author, 1978.
Let op: Deze citaties zijn niet altijd 100% accuraat.