Swokowski, Earl W.
Precalculus : functions and graphs
Brooks/Cole, 2012
 Buku Teks
Spectral radius of graphs / Dragan Stevanovic
Academic Press, 2015
 eBooks
Handbook of mathematical functions with formulas, graphs, and mathematical tables
edited by Milton Abramowitz, Irene A. Stegun
U.S. Government Printing Office, 1967
 Buku Referensi
Chartrand, Gary
Graphs as mathematical models / Gary Chartrand
Prindle, Weber & Schmidt , 1977
 Buku Teks
Youse, Bevan K.
Algebra and the elementary functions / Bevan K. Youse
Dickenson Pub, 1966
 Buku Teks