Pareto, Vilfredo, author
Frederick A. Praeger, 1966
Buku Teks
edited by William R. Spriegel and Clark E. Myers
R.D. Irwin, 1953
Buku Teks
Artikel Jurnal
Dewi Anggraeni, author
Kompas, 2023
Buku Teks
Roberts, Kate Louise, compiler
Grosset and Dunlap , 1940
Buku Referensi