APA (7th ed.) Citation

Geffert, M., Wagner, S., & Nikovic, S. (1985). Photographic observations of minor planets. Acta astronomica, 35(1/2), .

Chicago Style (17th ed.) Citation

Geffert, Michael, Stefan Wagner, and Slobodan Nikovic. "Photographic Observations of Minor Planets." Acta Astronomica 35, no. 1/2 (1985).

MLA (9th ed.) Citation

Geffert, Michael, et al. "Photographic Observations of Minor Planets." Acta Astronomica, vol. 35, no. 1/2, 1985.