How to condut telephone surveys
Linda P. Bourque, Eve P. Fielder
Thousand Oaks : SAGE PUBLIKATION, 2003,
 Buku Referensi
Hoxley, Mike
Good practice guide: building condition surveys
RIBA, 2009
 eBooks
Roman, Murray
Telephone marketing
McGraw-Hill, 1976
 Buku Teks SO
Ullmann, Manfred
Islamic surveys
Edinburgh University Press, 1978
 Buku Teks SO
Frey, James H.
Survey research by telephone
Sage Publications, 1983
 Buku Referensi