APA (7 वां संस्करण) प्रशस्ति पत्र

Geldsetzer. (2013). Logical Thinking in the Pyramidal Schema of Concepts: The Logical and Mathematical Elements (1.). Springer Netherlands.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Geldsetzer. Logical Thinking in the Pyramidal Schema of Concepts: The Logical and Mathematical Elements. 1. Springer Netherlands, 2013.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Geldsetzer. Logical Thinking in the Pyramidal Schema of Concepts: The Logical and Mathematical Elements. 1. Springer Netherlands, 2013.

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