American Psychological Association 6th edition

Yudi Setyawan, & The Pennsylvania State University Cite Seer X Archives. (1998). Combinatorial Number Theory: Result of Hilbert, Schur, . . . . http://www.cs.umd.edu/%7 Egasarch/vdw/Comb Num Theory Hil Sch Folk Hind.Pdf.

ISO-690 (author-date, English)

YUDI SETYAWAN and THE PENNSYLVANIA STATE UNIVERSITY CITESEERX ARCHIVES, 1998. Combinatorial Number Theory: Result of Hilbert, Schur, . . . . http://www.cs.umd.edu/%7 Egasarch/vdw/Comb Num Theory Hil Sch Folk Hind.pdf. 1 January 1998.

Modern Language Association 9th edition

Yudi Setyawan, and The Pennsylvania State University Cite Seer X Archives. “Combinatorial Number Theory: Result of Hilbert, Schur, . . . .”. http://www.cs.umd.edu/%7 Egasarch/vdw/Comb Num Theory Hil Sch Folk Hind.Pdf, Jan. 1998.

Mohr Siebeck - Recht (Deutsch - Österreich)

Yudi Setyawan/The Pennsylvania State University Cite Seer X Archives: Combinatorial Number Theory: Result of Hilbert, Schur, . . . ., http://www.cs.umd.edu/%7 Egasarch/vdw/Comb Num Theory Hil Sch Folk Hind.pdf 1998,

Emerald - Harvard

Yudi Setyawan and The Pennsylvania State University Cite Seer X Archives. (1998), “Combinatorial Number Theory: Result of Hilbert, Schur, . . . .”, http://www.cs.umd.edu/%7 Egasarch/vdw/Comb Num Theory Hil Sch Folk Hind.Pdf.

Warning: These citations may not always be 100% accurate.