Babson, R. W. (1933). Fighting business depressions: How to overcome operating losses in your business. Harper & Brothers.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Babson, Roger W. Fighting Business Depressions: How to Overcome Operating Losses in Your Business. New York: Harper & Brothers, 1933.
MLA -ийн эшлэл (9 дэх хэвлэлт)Babson, Roger W. Fighting Business Depressions: How to Overcome Operating Losses in Your Business. Harper & Brothers, 1933.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.