APA-čujuhus (7. p.)
Texas Education Agency & Texas Education Agency. (1978). Preferred signs: For instructional purposes. Texas Education Agency..
Chicago-čujuhus (17. p.)
Texas Education Agency juo Texas Education Agency. Preferred Signs: For Instructional Purposes. Texas, U.S.A.: Texas Education Agency., 1978.
MLA-čujuhus (9. p.)
Texas Education Agency juo Texas Education Agency. Preferred Signs: For Instructional Purposes. Texas Education Agency., 1978.
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