APA aipamena

BERI G.C. (1990). MARKETING RESEARCH. TATA MC GRAW HILL.

Chicago Style aipamena

BERI G.C. MARKETING RESEARCH. TATA MC GRAW HILL, 1990.

MLA aipamena

BERI G.C. MARKETING RESEARCH. TATA MC GRAW HILL, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.