APA

Armstrong L., . (1971). Theory of the hyperfine structure of free atoms. New York: Wiley-Interscience.

Chicago

Armstrong Lloyd, . 1971. Theory of the hyperfine structure of free atoms. New York: Wiley-Interscience.

Harvard

Armstrong L., . (1971). Theory of the hyperfine structure of free atoms. New York: Wiley-Interscience.

MLA

Armstrong Lloyd, . Theory of the hyperfine structure of free atoms. New York: Wiley-Interscience. 1971.