APA
Sferra A., . (1971). Personality and human relations. [Place of publication not identified]: Great Books Publishing.
Chicago
Sferra Adam, . 1971. Personality and human relations. [Place of publication not identified]: Great Books Publishing.
Harvard
Sferra A., . (1971). Personality and human relations. [Place of publication not identified]: Great Books Publishing.
MLA
Sferra Adam, . Personality and human relations. [Place of publication not identified]: Great Books Publishing. 1971.