Cita APA (7a ed.)

Krebs, D., & Schmidt, P. (1993). New directions in attitude measurement. de Gruyter.

Cita Chicago Style (17a ed.)

Krebs, Dagmar, y Peter Schmidt. New Directions in Attitude Measurement. Berlin [u.a.]: de Gruyter, 1993.

Cita MLA (8a ed.)

Krebs, Dagmar, y Peter Schmidt. New Directions in Attitude Measurement. de Gruyter, 1993.