Ong Kok Seng. (1993). Buku kerja lukisan geometri (buku 1). Kuala Lumpur: University Malaya.
Chicago Style CitationOng Kok Seng. Buku Kerja Lukisan Geometri (buku 1). Kuala Lumpur: University Malaya, 1993.
MLA CitationOng Kok Seng. Buku Kerja Lukisan Geometri (buku 1). Kuala Lumpur: University Malaya, 1993.
Warning: These citations may not always be 100% accurate.