Style de citation APA (7e éd.)

Winter, A. R. (1949). Why not make a retreat? Mayfield Pamphlet Service.

Style de citation Chicago (17e éd.)

Winter, A. R. Why Not Make a Retreat? [Place of publication not identified]: Mayfield Pamphlet Service, 1949.

Style de citation MLA (8e éd.)

Winter, A. R. Why Not Make a Retreat? Mayfield Pamphlet Service, 1949.