HARVARD BUSINESS SCHOOL PRESS. (1991). BEST OF HARVARD BUSINESS REVIEW. HARVARD BUSINESS REVIEW SCHOOL.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)HARVARD BUSINESS SCHOOL PRESS. BEST OF HARVARD BUSINESS REVIEW. BOSTAN: HARVARD BUSINESS REVIEW SCHOOL, 1991.
MLA -ийн эшлэл (9 дэх хэвлэлт)HARVARD BUSINESS SCHOOL PRESS. BEST OF HARVARD BUSINESS REVIEW. HARVARD BUSINESS REVIEW SCHOOL, 1991.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.