APA (7th ed.) Citation

Sterrewacht Leiden. (1921). Bulletin of the astronomical institutes of the Netherlands. North-Holland Pub. Co..

Chicago Style (17th ed.) Citation

Sterrewacht Leiden. Bulletin of the Astronomical Institutes of the Netherlands. Amsterdam: North-Holland Pub. Co., 1921.

MLA (8th ed.) Citation

Sterrewacht Leiden. Bulletin of the Astronomical Institutes of the Netherlands. North-Holland Pub. Co., 1921.

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