Texas Instruments. (1980). Model 990 computer Fortran: Programmer's reference manual. Digital Systems Division.
Citazione stile Chigago Style (17a edizione)Texas Instruments. Model 990 Computer Fortran: Programmer's Reference Manual. Austin: Digital Systems Division, 1980.
Citatione MLA (9a ed.)Texas Instruments. Model 990 Computer Fortran: Programmer's Reference Manual. Digital Systems Division, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.