APA (7th ed.) Citation

Clark, D. H., & Clark, M. D. H. (2004). Measuring the Cosmos: How Scientists Discovered the Dimensions of the Universe.

Chicago Style (17th ed.) Citation

Clark, David H., and Matthew D. H. Clark. Measuring the Cosmos: How Scientists Discovered the Dimensions of the Universe. 2004.

MLA (9th ed.) Citation

Clark, David H., and Matthew D. H. Clark. Measuring the Cosmos: How Scientists Discovered the Dimensions of the Universe. 2004.

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