False. There are more than three sources of external financing. Some of the other common sources of external financing include:
Debt financing: borrowing money from financial institutions or issuing bonds to investors
Equity financing: selling ownership shares in the company to raise capital
Grants: funding provided by government agencies or non-profit organizations
Venture capital: investment made by venture capital firms in startups and early-stage companies
Crowdfunding: raising capital through a large number of individuals, often through the internet
Leasing: obtaining financing by leasing equipment or property rather than purchasing it outright
These are just some of the many sources of external financing available to companies. The specific sources used depend on a variety of factors, including the size of the company, the industry in which it operates, and its specific financial needs and goals