Lua APA (7ú heag.)

PARASURAMAN A. (1991). MARKETING RESEARCH (2ND.). ADDISON-WESLEY.

Lua i Stíl Chicago (17ú heag.)

PARASURAMAN A. MARKETING RESEARCH. 2ND. NEW DELHI: ADDISON-WESLEY, 1991.

Lua MLA (9ú heag.)

PARASURAMAN A. MARKETING RESEARCH. 2ND. ADDISON-WESLEY, 1991.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.