Robertson, J. (1978). The sane alternative: Signposts to a self-fulfilling future. The author.
Citazione stile Chigago Style (17a edizione)Robertson, James. The Sane Alternative: Signposts to a Self-fulfilling Future. London: The author, 1978.
Citatione MLA (8a ed.)Robertson, James. The Sane Alternative: Signposts to a Self-fulfilling Future. The author, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.