Gaya APA
Bourque, L, B., Fielder, E, P. (1995).
How to Conduct Self-Administered and Mail Surveys .
California:
Sage Publications.
Gaya MLA
Bourque, Linda, B.., Fielder, Eve, P..
"How to Conduct Self-Administered and Mail Surveys".
California:
Sage Publications,
1995.
Text.