Παραπομπή APA

Lavrakas, P. J. (1993). Telephone survey methods: Sampling, selection, and supervision (2nd ed.). Newbury Park, CA.: Sage Publications.

Παραπομπή Chicago Style

Lavrakas, Paul J. Telephone Survey Methods: Sampling, Selection, and Supervision. 2nd ed. Newbury Park, CA.: Sage Publications, 1993.

Παραπομπή MLA

Lavrakas, Paul J. Telephone Survey Methods: Sampling, Selection, and Supervision. 2nd ed. Newbury Park, CA.: Sage Publications, 1993.

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