| Referens | Gotshall, D.W., 2005 Guide to marine invertebrates: Alaska to Baja California, 2nd ed. (revised). Sea Challengers. 117 p. |
| Ref. | 865 Gotshall, D.W., 2005 |
| Sida | 13 |
| Named Used as Valid | Polymastia pacifica |
| Observationsplats | |
| Distribution | Aleutian Is. to San Nicholas I., California. |