APA (7th ed.) Citation

Hertzsprung-Kapteyn, H. (1928). J. C. Kapteyn. Noordhoff.

Chicago Style (17th ed.) Citation

Hertzsprung-Kapteyn, H. J. C. Kapteyn. Groningen: Noordhoff, 1928.

MLA (9th ed.) Citation

Hertzsprung-Kapteyn, H. J. C. Kapteyn. Noordhoff, 1928.

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