Grupe, F., Chase, K. Using WordPerfect 5.1, Lotus 1-2-3/ Version 2.2, and dBase IV. Dubuque: Wm. C. Brown Publishers, 1991 716 p. : ill. 0-697-13066-5.
Grupe, F., Chase, K. Using WordPerfect 5.1, Lotus 1-2-3/ Version 2.2, and dBase IV. Dubuque: Wm. C. Brown Publishers, 1991 716 p. : ill. 0-697-13066-5.
Grupe, F., Chase, K. (1991) Using WordPerfect 5.1, Lotus 1-2-3/ Version 2.2, and dBase IV, Dubuque: Wm. C. Brown Publishers 716 p. : ill. 0-697-13066-5.
Grupe, F., & Chase, K. (1991). Using WordPerfect 5.1, Lotus 1-2-3/ Version 2.2, and dBase IV. Monogr.. Dubuque: Wm. C. Brown Publishers, 716 p. : ill.
Grupe F, Chase K. Using WordPerfect 5.1, Lotus 1-2-3/ Version 2.2, and dBase IV: Monogr.. Dubuque: Wm. C. Brown Publishers; 1991. p. 716 p. : ill. ISBN: 0-697-13066-5.