Billgray. (1986). Petunjuk Praktis Studio Menggambar / Billgray. Angkasa.
Chicago Style (17th ed.) CitationBillgray. Petunjuk Praktis Studio Menggambar / Billgray. Angkasa, 1986.
MLA (8th ed.) CitationBillgray. Petunjuk Praktis Studio Menggambar / Billgray. Angkasa, 1986.
Warning: These citations may not always be 100% accurate.