Wingate, M., & Koch, J. (2013). Perennials for the Pacific Northwest: 500 best plants for flower gardens. Sasquatch Books.
Cita Chicago Style (17a ed.)Wingate, Marty, y Jacqueline Koch. Perennials for the Pacific Northwest: 500 Best Plants for Flower Gardens. Seattle, WA: Sasquatch Books, 2013.
Cita MLA (8a ed.)Wingate, Marty, y Jacqueline Koch. Perennials for the Pacific Northwest: 500 Best Plants for Flower Gardens. Sasquatch Books, 2013.
Precaución: Estas citas no son 100% exactas.