APA-ийн эшлэл(7 дахь хэвлэлт)

COMPETITION SUCCESS REVIEW. (1991). GENERAL KNOWLEDGE 1990-91 (122.). COMPETITION REVIEW PVT. LTD.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

COMPETITION SUCCESS REVIEW. GENERAL KNOWLEDGE 1990-91. 122. NEW DELHI: COMPETITION REVIEW PVT. LTD, 1991.

MLA -ийн эшлэл (9 дэх хэвлэлт)

COMPETITION SUCCESS REVIEW. GENERAL KNOWLEDGE 1990-91. 122. COMPETITION REVIEW PVT. LTD, 1991.