Trích dẫn APA

Gross, L. The art of selling intangibles: How to make your million($) by investing other people's money / LeRoy Gross. New York Institute of Finance.

Trích dẫn kiểu Chicago

Gross, LeRoy. The Art of Selling Intangibles: How to Make Your Million($) By Investing Other People's Money / LeRoy Gross. New York Institute of Finance.

Trích dẫn MLA

Gross, LeRoy. The Art of Selling Intangibles: How to Make Your Million($) By Investing Other People's Money / LeRoy Gross. New York Institute of Finance.

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