Gumilar Rusliwa Somantri
Lembaga Penerbit Fakultas Ekonomi Universitas Indonesia, 1995
Buku Teks
Gumilar Rusliwa Somantri
Lembaga Penelitian Universitas Indonesia, 1993
UI - Laporan Penelitian
Mavroudi, Elizabeth
Routledge, 2016
Buku Teks
Samers, Michael
Routledge, 2017
Buku Teks
edited by Riwanto Tirtosudarmo, Sri Suratmini and Susi Fauziah,
LIPI Press, 2015
Buku Teks SO