(1991). Postprincipia: Gravitation for physicists and astronomers. Singapore: World Scientific.
Trích dẫn kiểu ChicagoPostprincipia: Gravitation for Physicists and Astronomers. Singapore: World Scientific, 1991.
Deismireacht MLAPostprincipia: Gravitation for Physicists and Astronomers. Singapore: World Scientific, 1991.
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