MLA

Geldsetzer, Lutz, and Richard L Schwartz. Logical Thinking In the Pyramidal Schema of Concepts: The Logical and Mathematical Elements. Dordrecht: Springer Netherlands, 2013.

APA

Geldsetzer, L., & Schwartz, R. L. (2013). Logical Thinking in the Pyramidal Schema of Concepts: The Logical and Mathematical Elements. Dordrecht: Springer Netherlands.

Chicago

Geldsetzer, Lutz, and Richard L Schwartz. Logical Thinking In the Pyramidal Schema of Concepts: The Logical and Mathematical Elements. Dordrecht: Springer Netherlands, 2013.