APA (7th ed.) Citation

Wielen, R. (1973). Places of formation of nearby classical cepheids. Astronomy and astrophysics, 25, .

Chicago Style (17th ed.) Citation

Wielen, Roland. "Places of Formation of Nearby Classical Cepheids." Astronomy and Astrophysics 25 (1973).

MLA (9th ed.) Citation

Wielen, Roland. "Places of Formation of Nearby Classical Cepheids." Astronomy and Astrophysics, vol. 25, 1973.

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