APA (7th ed.) Citation

Ooi, B. C. (1990). Efficient query processing in geographic information systems. Springer-Verlag.

Chicago Style (17th ed.) Citation

Ooi, Beng Chin. Efficient Query Processing in Geographic Information Systems. Berlin: Springer-Verlag, 1990.

MLA (8th ed.) Citation

Ooi, Beng Chin. Efficient Query Processing in Geographic Information Systems. Springer-Verlag, 1990.

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