Não informado. (1989). Invertebrate Reproduction & Development. International Science Services.
Chicago-viite (17. p.)Não informado. Invertebrate Reproduction & Development. Rehovot, Israel: International Science Services, 1989.
MLA-viite (8. p.)Não informado. Invertebrate Reproduction & Development. International Science Services, 1989.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.