Seltzer, S. M., & Bergstrom, P. M. (2003). Changes in the U.S. Primary Standards for the Air Kerma From Gamma-Ray Beams. J Res Natl Inst Stand Technol.
शिकागो स्टाइल उद्धरणSeltzer, Stephen M., और Paul M. Bergstrom. "Changes in the U.S. Primary Standards for the Air Kerma From Gamma-Ray Beams." J Res Natl Inst Stand Technol 2003.
एमएलए उद्धरणSeltzer, Stephen M., और Paul M. Bergstrom. "Changes in the U.S. Primary Standards for the Air Kerma From Gamma-Ray Beams." J Res Natl Inst Stand Technol 2003.
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