एपीए उद्धरण

Buckley, E. A. (1961). How to increase sales with letters. McGraw Hill.

शिकागो स्टाइल उद्धरण

Buckley, Earle A. How to Increase Sales with Letters. McGraw Hill, 1961.

एमएलए उद्धरण

Buckley, Earle A. How to Increase Sales with Letters. McGraw Hill, 1961.