Gaya APA
SECHREST, L. (1979).
New Directions For Methodology Of Behavioral Science : Unobtrusive Measurement Today (1).
San Francisco:
Jossey-Bass Inc.
Gaya MLA
SECHREST, LEE.
"New Directions For Methodology Of Behavioral Science : Unobtrusive Measurement Today".
1
San Francisco:
Jossey-Bass Inc,
1979.
Text.