APA (7th ed.) Citation
Texas Education Agency & Texas Education Agency. (1978). Preferred signs: For instructional purposes. Texas Education Agency..
Chicago Style (17th ed.) Citation
Texas Education Agency and Texas Education Agency. Preferred Signs: For Instructional Purposes. Texas, U.S.A.: Texas Education Agency., 1978.
MLA (9th ed.) Citation
Texas Education Agency and Texas Education Agency. Preferred Signs: For Instructional Purposes. Texas Education Agency., 1978.
Warning: These citations may not always be 100% accurate.