Petkov, P. P. (1990). Mathematical Logic. Springer US.
Chicago Style (17th ed.) CitationPetkov, Petio Petrov. Mathematical Logic. Boston, MA: Springer US, 1990.
MLA (9th ed.) CitationPetkov, Petio Petrov. Mathematical Logic. Springer US, 1990.
Warning: These citations may not always be 100% accurate.