ROXBOROUGH, J. (1986). Teori-teori Keterbelakangan / Ian Roxborough. LP3ES.
Chicago Style (17th ed.) CitationROXBOROUGH, Jan. Teori-teori Keterbelakangan / Ian Roxborough. LP3ES, 1986.
ציטוט MLAROXBOROUGH, Jan. Teori-teori Keterbelakangan / Ian Roxborough. LP3ES, 1986.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.