Cita APA

Bakers, R. H. (1961). An introduction to astronomy. D. Van Nostrand.

Citación estilo Chicago

Bakers, Robert H. An Introduction to Astronomy. Princeton, NJ: D. Van Nostrand, 1961.

Cita MLA

Bakers, Robert H. An Introduction to Astronomy. D. Van Nostrand, 1961.

Warning: These citations may not always be 100% accurate.