एपीए उद्धरण

Longley- Cook L H. (1970). Statistical problems and how to solve them. Barnes and Noble.

शिकागो स्टाइल उद्धरण

Longley- Cook L H. Statistical Problems and How to Solve Them. NewYork: Barnes and Noble, 1970.

एमएलए उद्धरण

Longley- Cook L H. Statistical Problems and How to Solve Them. Barnes and Noble, 1970.