Lubis, I. (1990). Morfo-sintaksis bahasa Melayu Riau. Depdikbud.
Chicago Style (17th ed.) CitationLubis, Idrus. Morfo-sintaksis Bahasa Melayu Riau. Depdikbud, 1990.
MLA (8th ed.) CitationLubis, Idrus. Morfo-sintaksis Bahasa Melayu Riau. Depdikbud, 1990.
Warning: These citations may not always be 100% accurate.