Franklin

MLA

Na, Il-sŏng. Photoelectric Photometry of Cw Cephei and Ru Ursae Minoris. [Philadelphia], 1971.

APA

Na, I. (1971). Photoelectric photometry of CW Cephei and RU Ursae minoris. [Philadelphia].

Chicago

Na, Il-sŏng. Photoelectric Photometry of CW Cephei and RU Ursae Minoris. [Philadelphia], 1971.