Harvard catalogue of photographic magnitudes of bright stars north of +57⁰.5 /
Cecilia H. Payne, Harlow Shapley.
APA Citation
Gaposchkin, C. Helena Payne., Shapley, H., Harvard College Observatory. (1933). Harvard catalogue of photographic magnitudes of bright stars north of +57⁰.5. Cambridge, Mass.: [Harvard College Observatory?].
MLA Citation
Gaposchkin, Cecilia Helena Payne, 1900-, Harlow Shapley, and Harvard College Observatory. Harvard Catalogue of Photographic Magnitudes of Bright Stars North of +57⁰.5. Cambridge, Mass.: [Harvard College Observatory?], 1933.
Warning: These citations may not always be complete (especially for serials).