APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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