APA (7th ed.) Citation

Muller, J., Burderi, L., & Robba, N. (1999). Circinus X-1: An X-ray Chameleon. Astrophysical Letters & Communications, 38(1-6), 145.

Chicago Style (17th ed.) Citation

Muller, J.M, L. Burderi, and N.R Robba. "Circinus X-1: An X-ray Chameleon." Astrophysical Letters & Communications 38, no. 1-6 (1999): 145.

MLA (9th ed.) Citation

Muller, J.M, et al. "Circinus X-1: An X-ray Chameleon." Astrophysical Letters & Communications, vol. 38, no. 1-6, 1999, p. 145.