Cita APA (7th ed.)
Niwata, N. (1971). The economic Theory of insurance and social security. Keio Univ., Soc. of business and commerce.
Cita Chicago (17th ed.)
Niwata, Noriaki. The Economic Theory of Insurance and Social Security. Tokyo: Keio Univ., Soc. of business and commerce, 1971.
Cita MLA (9th ed.)
Niwata, Noriaki. The Economic Theory of Insurance and Social Security. Keio Univ., Soc. of business and commerce, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.