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- Language: English
- Year: 2013
- Author: Polansky Larry, Seeger Ruth Crawford, Tick Judith
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- Year: 2003
- Author: Hu Meiling, Sun Wei
- Language: Chinese
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- Author: Voss Herbert
- Language: English
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- Author: Ćurčić-Blake Branislava, Maurits Natasha
- Language: English
- Year: 2017
- Author: Baker Peter A., Smith Elbert G., Wiswesser William J.
- Language: English
- Year: 1976
- Author: Elaine Gould
- Language: English
- Year: 2011
- Author: Gottlob Frege
- Language: English
- Year: 1972
- Author: Nicolás Salazar Sutil
- Language: English
- Year: 2015
- Author: C. F. Abdy Williams
- Language: English
- Year: 1903