Texas Instruments Incorporated. (1990). TI-81 guidebook. Texas Instuments Inc.
Chicagoスタイル(17版)引用形式Texas Instruments Incorporated. TI-81 Guidebook. S.l: Texas Instuments Inc, 1990.
MLA(9版)引用形式Texas Instruments Incorporated. TI-81 Guidebook. Texas Instuments Inc, 1990.
警告: この引用は必ずしも正確ではありません.