Gumilar Rusliwa Somantri
Lembaga Penerbit Fakultas Ekonomi Universitas Indonesia, 2007
Buku Teks
Gumilar Rusliwa Somantri
Lembaga Penelitian Universitas Indonesia, 1993
UI - Laporan Penelitian
Mavroudi, Elizabeth
Routledge, 2016
Buku Teks SO
Samers, Michael
Routledge, 2017
Buku Teks SO
edited by Riwanto Tirtosudarmo, Sri Suratmini and Susi Fauziah,
LIPI Press, 2015
Buku Teks SO