Ritterbush, S. D. (1986). Entrepreneurship and business venture development in the Kingdom of Tonga. Pacific Islands Development Program, East-West Center.
Chicago-viite (17. p.)Ritterbush, S. Deacon. Entrepreneurship and Business Venture Development in the Kingdom of Tonga. Honolulu: Pacific Islands Development Program, East-West Center, 1986.
MLA-viite (9. p.)Ritterbush, S. Deacon. Entrepreneurship and Business Venture Development in the Kingdom of Tonga. Pacific Islands Development Program, East-West Center, 1986.
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