Sardjono. (1989). Cakrawala Pendidikan nomor 2. UPT Perpustakaan IKIP Yogyakarta.
Chicago Style (17th ed.) CitationSardjono. Cakrawala Pendidikan Nomor 2. UPT Perpustakaan IKIP Yogyakarta, 1989.
MLA (8th ed.) CitationSardjono. Cakrawala Pendidikan Nomor 2. UPT Perpustakaan IKIP Yogyakarta, 1989.
Warning: These citations may not always be 100% accurate.