APA (7th ed.) Citation

Ascher, S. (1980). An investigation of a space time clustering problem. University Microfilms International.

Chicago Style (17th ed.) Citation

Ascher, Steven. An Investigation of a Space Time Clustering Problem. Ann Arbor: University Microfilms International, 1980.

MLA (9th ed.) Citation

Ascher, Steven. An Investigation of a Space Time Clustering Problem. University Microfilms International, 1980.