Gaya APA
DILLMAN, Don A.. (1978).
MAIL AND TELEPHONE SURVEYS ; The Total Design Method .
Canada:
JOHN WILEY & SON.
Gaya Chicago
DILLMAN, Don A..
MAIL AND TELEPHONE SURVEYS ; The Total Design Method.
Canada:
JOHN WILEY & SON,
1978.
Text.
Gaya MLA
DILLMAN, Don A..
MAIL AND TELEPHONE SURVEYS ; The Total Design Method.
Canada:
JOHN WILEY & SON,
1978.
Text.
Gaya Turabian
DILLMAN, Don A..
MAIL AND TELEPHONE SURVEYS ; The Total Design Method.
Canada:
JOHN WILEY & SON,
1978.
Print.