APA (7th ed.) Citation

Radio Shack. (1981). TRS-80 model III technical reference manual. Radio Shack.

Chicago Style (17th ed.) Citation

Radio Shack. TRS-80 Model III Technical Reference Manual. Fort Worth, Tex.: Radio Shack, 1981.

MLA (9th ed.) Citation

Radio Shack. TRS-80 Model III Technical Reference Manual. Radio Shack, 1981.

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