APA (7th ed.) Citation

Brinkhoff, T., Kriegel, H., & Seeger, B. (1993). Efficient processing of spatial joins using R-trees.

Chicago Style (17th ed.) Citation

Brinkhoff, Thomas, Hans-Peter Kriegel, and Bernhard Seeger. Efficient Processing of Spatial Joins Using R-trees. München, 1993.

MLA (9th ed.) Citation

Brinkhoff, Thomas, et al. Efficient Processing of Spatial Joins Using R-trees. 1993.

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