Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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