Nasution, Zulkarimein, author
Lembaga Penerbit Fakultas Ekonomi Universitas Indonesia, 1990
Buku Teks
Basic Books , 1963
Buku Teks
Tubbs, Stewart L., author
Remaja Rosdakarya, 1996
Buku Teks
H.A.W. Widjaja,1940-, author
Rineka Cipta, 2000
Buku Teks
Tubbs, Stewart L., author
Remaja Rosdakarya, 1996
Buku Teks