Calder, R., Amirsadeghi, H., & Borgese, E. M. (1983). The Future of a troubled world. Heinemann.
Tohutoru Kātū Chicago (17th ed.)Calder, Ritchie, Hossein Amirsadeghi, me Elisabeth Mann Borgese. The Future of a Troubled World. London: Heinemann, 1983.
Tohutoro MLA (9th ed.)Calder, Ritchie, et al. The Future of a Troubled World. Heinemann, 1983.
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