APA (7. basım) Alıntı

STEWART DAVID. (1990). FOCUS GROUPS. SAGE PUBLICATIONS.

Chicago Style (17. basım) Atıf

STEWART DAVID. FOCUS GROUPS. NEWBURY PARK: SAGE PUBLICATIONS, 1990.

MLA (9th ed.) Atıf

STEWART DAVID. FOCUS GROUPS. SAGE PUBLICATIONS, 1990.