| Citation | Schreiber, E.A. and J. Burger, 2001 Biology of marine birds. Boca Raton, Florida: CRC Press. 722 p. |
| संदर्भ | 87784 Schreiber, E.A. and J. Burger, 2001 |
| Page | 154-200 |
| Named Used as Valid | Larus occidentalis |
| स्थान | |
| वितरण | Farallon Islands, California, USA. |