Gaya APA
Sue, Valerie M., Ritter, Lois A.. (2012).
Conducting online surveys (2nd ed.).
Los Angeles:
SAGE.
Gaya Chicago
Sue, Valerie M., Ritter, Lois A..
Conducting online surveys.
2nd ed.
Los Angeles:
SAGE,
2012.
Buku.
Gaya MLA
Sue, Valerie M., Ritter, Lois A..
Conducting online surveys.
2nd ed.
Los Angeles:
SAGE,
2012.
Buku.
Gaya Turabian
Sue, Valerie M., Ritter, Lois A..
Conducting online surveys.
2nd ed.
Los Angeles:
SAGE,
2012.
Buku.