APA(7版)引用形式

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

Chicagoスタイル(17版)引用形式

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

MLA(9版)引用形式

STEWART DAVID. FOCUS GROUPS. SAGE PUBLICATIONS, 1990.