Hovey, Craig
The Complete ideals guide : global economics
Prenada, 2009
 Buku Teks SO
Simanjuntak, Ekky Gompa
Great strategy to make Indonesia a great nation / Ekky Gompa Simanjuntak, Elisabeth Rosali Rompis
The Ary Suta Center, 2019
 Artikel Jurnal
Soule, George
Pikiran sardjana-sardjana besar ahli ekonomi = Ideas of the great economics
Pustaka Rakjat, 1952
 Buku Teks SO
Conway, Ronald
The Great Australian stupor : an interpretation of the Australian way of life
Sun Books, 1971
 Buku Teks
Maxwell, John C.
Good leaders ask great quetions
Menuju Insan Cemerlang (MIC), 2015
 Buku Teks SO