APA
Edmunds H., American Marketing Association, . (1999). The focus group research handbook. Lincolnwood, Ill: NTC Business Books.
Chicago
Edmunds Holly, American Marketing Association, . 1999. The focus group research handbook. Lincolnwood, Ill: NTC Business Books.
Harvard
Edmunds H., American Marketing Association, . (1999). The focus group research handbook. Lincolnwood, Ill: NTC Business Books.
MLA
Edmunds Holly, American Marketing Association, . The focus group research handbook. Lincolnwood, Ill: NTC Business Books. 1999.