एपीए उद्धरण

Freemantle, D. (1993). Incredible customer service: The final test. London: McGraw-Hill.

शिकागो स्टाइल उद्धरण

Freemantle, David. Incredible Customer Service: The Final Test. London: McGraw-Hill, 1993.

एमएलए उद्धरण

Freemantle, David. Incredible Customer Service: The Final Test. London: McGraw-Hill, 1993.