Παραπομπή APA

Foster, J., & Nightingale, J. D. (1979). A short course in general relativity. London: Longman.

Παραπομπή Chicago Style

Foster, J., and J. D. Nightingale. A Short Course in General Relativity. London: Longman, 1979.

Παραπομπή MLA

Foster, J., and J. D. Nightingale. A Short Course in General Relativity. London: Longman, 1979.

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