The document discusses various sources of finance for businesses, including internal sources like profits, customers, and suppliers; and external sources like equity and debt. It covers short-term sources like overdrafts and factoring, medium-term sources like term loans and leasing, and long-term sources like shares, bonds, retained earnings, and loans from institutions. The key aspects are to match financing needs with appropriate sources, understand the costs and risks of different options, and establish a financial plan to take advantage of sources without damaging the business's credit or relationships.