Schwartz, R. E. (2014). The octogonal PETs. American Mathematical Society.
Chicago Style (17th ed.) CitationSchwartz, Richard Evan. The Octogonal PETs. Providence, Rhode Island: American Mathematical Society, 2014.
MLA (8th ed.) CitationSchwartz, Richard Evan. The Octogonal PETs. American Mathematical Society, 2014.
Warning: These citations may not always be 100% accurate.