APA (7th ed.) Citation

Edwards Underground Water District. (1993). Teacher's guide, a journey through the Edwards Aquifer: Elementary level. Edwards Underground Water District.

Chicago Style (17th ed.) Citation

Edwards Underground Water District. Teacher's Guide, a Journey Through the Edwards Aquifer: Elementary Level. San Antonio, TX: Edwards Underground Water District, 1993.

MLA (9th ed.) Citation

Edwards Underground Water District. Teacher's Guide, a Journey Through the Edwards Aquifer: Elementary Level. Edwards Underground Water District, 1993.