APA

Cowan R. D., . (1981). The theory of atomic structure and spectra. Berkeley: University of California Press.

Chicago

Cowan Robert Duane, . 1981. The theory of atomic structure and spectra. Berkeley: University of California Press.

Harvard

Cowan R. D., . (1981). The theory of atomic structure and spectra. Berkeley: University of California Press.

MLA

Cowan Robert Duane, . The theory of atomic structure and spectra. Berkeley: University of California Press. 1981.