Dyfyniad APA

Yeomans, D. K. (1983). The Comet Halley handbook: An observer's guide (2nd ed.). NASA, Jet Propulsion Laboratory, California Institute of Technology ; For sale by Supt. of Docs., U.S. G.P.O..

Dyfyniad Arddull Chicago

Yeomans, Donald K. The Comet Halley Handbook: An Observer's Guide. 2nd ed. Pasadena, Calif. : Washington, D.C.: NASA, Jet Propulsion Laboratory, California Institute of Technology ; For sale by Supt. of Docs., U.S. G.P.O., 1983.

Dyfyniad MLA

Yeomans, Donald K. The Comet Halley Handbook: An Observer's Guide. 2nd ed. NASA, Jet Propulsion Laboratory, California Institute of Technology ; For sale by Supt. of Docs., U.S. G.P.O., 1983.

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