Gaya APA
Lavrakas, Paul J.. (1987).
Telephone Survey Methods: Sampling, Selectipon, And Supervision J.7 .
California:
SAGE PUBLICATIONS.
Gaya Chicago
Lavrakas, Paul J..
Telephone Survey Methods: Sampling, Selectipon, And Supervision J.7.
California:
SAGE PUBLICATIONS,
1987.
Teks.
Gaya MLA
Lavrakas, Paul J..
Telephone Survey Methods: Sampling, Selectipon, And Supervision J.7.
California:
SAGE PUBLICATIONS,
1987.
Teks.
Gaya Turabian
Lavrakas, Paul J..
Telephone Survey Methods: Sampling, Selectipon, And Supervision J.7.
California:
SAGE PUBLICATIONS,
1987.
Teks.