COPSAT Feb 2001-floppy. NCSI.
Chicago Edition CitationCOPSAT Feb 2001-floppy. Bangalore: NCSI.
ציטוט MLACOPSAT Feb 2001-floppy. NCSI.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.
COPSAT Feb 2001-floppy. NCSI.
Chicago Edition CitationCOPSAT Feb 2001-floppy. Bangalore: NCSI.
ציטוט MLACOPSAT Feb 2001-floppy. NCSI.