Tomescu, I. (1985). Problems in combinatorics and graph theory. John Wiley.
Cita Chicago (17th ed.)Tomescu, Ioan. Problems in Combinatorics and Graph Theory. Nueva York: John Wiley, 1985.
Cita MLA (9th ed.)Tomescu, Ioan. Problems in Combinatorics and Graph Theory. John Wiley, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.