Warji. (1983). Program belajar mengajar dengan prinsip belajar tuntas (mastery learning). IDM.
Chicago Style (17th ed.) CitationWarji. Program Belajar Mengajar Dengan Prinsip Belajar Tuntas (mastery Learning). IDM, 1983.
MLA (8th ed.) CitationWarji. Program Belajar Mengajar Dengan Prinsip Belajar Tuntas (mastery Learning). IDM, 1983.
Warning: These citations may not always be 100% accurate.