Artikel Jurnal
Gaspersz, Vincent, author
Tarsito, 1991
Buku Teks
Cochran, William G., author
UI-Press, 1991
Buku Teks
Cochran, William G., author
UI-Press, 2005
Buku Teks
Cochran, William G., author
Penerbit Universitas Indonesia (UI-Press), 2005
Buku Teks