Cofnodi Dyfyniadau
Dyfyniad APA
Fimmel Richard O., Van Allen James, Burgess Eric, & Mutch Thomas A. (1980). Pionner. NASA.
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Dyfyniad Arddull Chicago
Fimmel Richard O., Van Allen James, Burgess Eric, and Mutch Thomas A. Pionner. NASA, 1980.
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Dyfyniad MLA
Fimmel Richard O., et al. Pionner. NASA, 1980.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.