Cita APA (7a ed.)

Eysenck, H. J. (1990). Differential psychology before and after William Stern. Psychologische Beiträge, 32(3/4), 249-262.

Cita Chicago Style (17a ed.)

Eysenck, Hans Jürgen. "Differential Psychology Before and After William Stern." Psychologische Beiträge 32, no. 3/4 (1990): 249-262.

Cita MLA (8a ed.)

Eysenck, Hans Jürgen. "Differential Psychology Before and After William Stern." Psychologische Beiträge, vol. 32, no. 3/4, 1990, pp. 249-262.