Cita APA (7a ed.)

Larsen, E. W., & Roots, B. I. (2005). Flower guide for holiday weekends in Eastern Canada and Northeastern U.S.A. NRC Press.

Cita Chicago Style (17a ed.)

Larsen, Ellen Wynne, y Betty I. Roots. Flower Guide for Holiday Weekends in Eastern Canada and Northeastern U.S.A. Ottawa: NRC Press, 2005.

Cita MLA (9a ed.)

Larsen, Ellen Wynne, y Betty I. Roots. Flower Guide for Holiday Weekends in Eastern Canada and Northeastern U.S.A. NRC Press, 2005.