Não informado. Thomas Cawthron memorial lecture. Cawthron Institute of Scientific Research.
Chicago-viite (17. p.)Não informado. Thomas Cawthron Memorial Lecture. Nelson, Nova Zelandia: Cawthron Institute of Scientific Research.
MLA-viite (8. p.)Não informado. Thomas Cawthron Memorial Lecture. Cawthron Institute of Scientific Research.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.