Roberts, Arthur D.
Programming for numerical control machines / Arthur D. Roberts and Richard C. Prentice
McGraw-Hill , 1968
Buku Teks SO
The languages of the Pacific Nancy J. Morris
Artikel Jurnal
Grimes, Charles E.
Languages of South Sulawesi / by Charles E. Grimes and Barbara D. Grimes.
Australian National University, 1987
Buku Teks SO
Hutton, Wendy
Discovering Sabah
Opus Publications Sdn Bhd, 2007
Buku Referensi
Grigoriu, D.
Traite de mycologie medicale / D. Grigoriu, J. Delacretaz, D. Borelli
Editiones Roche, 1984
Buku Teks SO