Gaya APA
Guppy, Neil, Gray, George. (0).
Successful surveys : research methods and practice .
:
.
Gaya Chicago
Guppy, Neil, Gray, George.
Successful surveys : research methods and practice.
:
,
0.
Academic.
Gaya MLA
Guppy, Neil, Gray, George.
Successful surveys : research methods and practice.
:
,
0.
Academic.
Gaya Turabian
Guppy, Neil, Gray, George.
Successful surveys : research methods and practice.
:
,
0.
Academic.