Wirojoebo, S. (1981). Cakrawala Pendidikan Nomor 3 volume1. Gramedia.
Chicago Style (17th ed.) CitationWirojoebo, Soebijanto. Cakrawala Pendidikan Nomor 3 Volume1. Gramedia, 1981.
MLA (8th ed.) CitationWirojoebo, Soebijanto. Cakrawala Pendidikan Nomor 3 Volume1. Gramedia, 1981.
Warning: These citations may not always be 100% accurate.