SpringerLink (Online service) & Sommaruga, G. (2011). Foundational theories of classical and constructive mathematics. Springer Netherlands.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSpringerLink (Online service) और Giovanni Sommaruga. Foundational Theories of Classical and Constructive Mathematics. Dordrecht: Springer Netherlands, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSpringerLink (Online service) और Giovanni Sommaruga. Foundational Theories of Classical and Constructive Mathematics. Springer Netherlands, 2011.
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