BioStor
 | Additional common and vernacular names recorded for members of the Verbenaceae and Avicenniaceae H Moldenke (1944) Phytologia 2: 65-88 |
 | The known geographic distribution of the members of t he Verbenaceae and Avicenniaceae. Supplement 6 H N Moldenke (1947) Phytologia 2: 325-348 |
 | Systematics and Evolution of the Genus Petrea (Verbenaceae) Ricardo M Rueda (1994) Annals of the Missouri Botanical Garden 81: 610-652 |