Kitching, R. (1969). The fauna of tree-holes in relation to environmental factors.
Chicago-viite (17. p.)Kitching, RL. The Fauna of Tree-holes in Relation to Environmental Factors. 1969.
MLA-viite (9. p.)Kitching, RL. The Fauna of Tree-holes in Relation to Environmental Factors. 1969.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.