APA (7th ed.) Citation

Walahfrid Strabo, 8., & Mitchell, J. (2009). On the cultivation of gardens: A ninth century gardening book. Ithuriel's Spear.

Chicago Style (17th ed.) Citation

Walahfrid Strabo, 807?-849, and James Mitchell. On the Cultivation of Gardens: A Ninth Century Gardening Book. San Francisco: Ithuriel's Spear, 2009.

MLA (9th ed.) Citation

Walahfrid Strabo, 807?-849, and James Mitchell. On the Cultivation of Gardens: A Ninth Century Gardening Book. Ithuriel's Spear, 2009.