| Citation | Springsteen, F.J. and F.M. Leobrera, 1986 Shells of the Philippines. Carfel Seashell Museum. Metro Manila, Philippines. 377 p. |
| Ref. | 821 Springsteen, F.J. and F.M. Leobrera, 1986 |
| Page | 42 |
| Named Used as Valid | Guildfordia yoka |
| Locality | |
| Distribution | Philippines. |