Nielson, C. W., & Koster, G. F. (1963). Spectroscopic coefficients for the p [superscript n], d [superscript n], and f [superscript n] configurations. M. I. T. Press.
Chicago Style (17th ed.) CitationNielson, C. W., and George F. Koster. Spectroscopic Coefficients for the P [superscript N], D [superscript N], and F [superscript N] Configurations. Cambridge, Mass.: M. I. T. Press, 1963.
MLA (9th ed.) CitationNielson, C. W., and George F. Koster. Spectroscopic Coefficients for the P [superscript N], D [superscript N], and F [superscript N] Configurations. M. I. T. Press, 1963.
Warning: These citations may not always be 100% accurate.