APA (7th ed.) Citation

(2008). Radio Shack TRS-80 Expansion Interface: Operator's Manual Catalog Numbers: 26-1140, 26-1141, 26-1142. Project Gutenberg.

Chicago Style (17th ed.) Citation

Radio Shack TRS-80 Expansion Interface: Operator's Manual Catalog Numbers: 26-1140, 26-1141, 26-1142. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Radio Shack TRS-80 Expansion Interface: Operator's Manual Catalog Numbers: 26-1140, 26-1141, 26-1142. Project Gutenberg, 2008.

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