Gossler, R., Gossler, E., & Gossler, M. (2009). The Gossler guide to the best hardy shrubs: More than 350 expert choices for your garden. Timber Press.
Style de citation Chicago (17e éd.)Gossler, Roger, Eric Gossler, et Marjory Gossler. The Gossler Guide to the Best Hardy Shrubs: More than 350 Expert Choices for Your Garden. Portland, Or.: Timber Press, 2009.
Style de citation MLA (8e éd.)Gossler, Roger, et al. The Gossler Guide to the Best Hardy Shrubs: More than 350 Expert Choices for Your Garden. Timber Press, 2009.
Attention : ces citations peuvent ne pas être correctes à 100%.