Não informado. (1909). Contributions from the Biological Laboratory of Brown University. Brown University, Biological Laboratory.
Chicago-viite (17. p.)Não informado. Contributions from the Biological Laboratory of Brown University. Providence, RI: Brown University, Biological Laboratory, 1909.
MLA-viite (8. p.)Não informado. Contributions from the Biological Laboratory of Brown University. Brown University, Biological Laboratory, 1909.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.