APA (7th ed.) Citation

Machin, G., Machin, G., & McHardy, I. (1990). Cataclysmic variables in globular clusters and low mass X-ray binaries.

Chicago Style (17th ed.) Citation

Machin, G., Graham Machin, and I. McHardy. Cataclysmic Variables in Globular Clusters and Low Mass X-ray Binaries. 1990.

MLA (9th ed.) Citation

Machin, G., et al. Cataclysmic Variables in Globular Clusters and Low Mass X-ray Binaries. 1990.