APA (7th ed.) Citation

Illingworth, G. D. (1973). Masses of globular clusters.

Chicago Style (17th ed.) Citation

Illingworth, Garth D. Masses of Globular Clusters. 1973.

MLA (8th ed.) Citation

Illingworth, Garth D. Masses of Globular Clusters. 1973.

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