Παραπομπή APA

Lessler, J. T. K. (1992). Nonsampling errors in survys. John Wiley.

Παραπομπή Chicago Style

Lessler, Judith T Kalsbeek. Nonsampling Errors in Survys. New ork: John Wiley, 1992.

Παραπομπή MLA

Lessler, Judith T Kalsbeek. Nonsampling Errors in Survys. John Wiley, 1992.