APA Citation

Krogdahl, M. K. (1944). Physical problems related to the hydrogen and helium lines in stellar spectra.

Chicago Style Citation

Krogdahl, Margaret Kiess. Physical Problems Related to the Hydrogen and Helium Lines in Stellar Spectra. 1944.

MLA Citation

Krogdahl, Margaret Kiess. Physical Problems Related to the Hydrogen and Helium Lines in Stellar Spectra. 1944.

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