APA (7th ed.) Citation

San Antonio Cartographic Services. (1990). La Porte, Texas. San Antonio Cartographic Services.

Chicago Style (17th ed.) Citation

San Antonio Cartographic Services. La Porte, Texas. San Antonio, Tex.: San Antonio Cartographic Services, 1990.

MLA (9th ed.) Citation

San Antonio Cartographic Services. La Porte, Texas. San Antonio Cartographic Services, 1990.

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