APA (7 वां संस्करण) प्रशस्ति पत्र

MYLIUS RALPH. (1987). LOTUS 1-2-3 STUDENTS WORK BOOK AND INSTRUCTOR`S GUIDE. BPB PUBLICATIONS.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

MYLIUS RALPH. LOTUS 1-2-3 STUDENTS WORK BOOK AND INSTRUCTOR`S GUIDE. DELHI: BPB PUBLICATIONS, 1987.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

MYLIUS RALPH. LOTUS 1-2-3 STUDENTS WORK BOOK AND INSTRUCTOR`S GUIDE. BPB PUBLICATIONS, 1987.