APA
Krakow I., . (1991). Lotus 1-2-3 self taught. Prentice Hall, New Delhi: .
Chicago
Krakow Ira, . 1991. Lotus 1-2-3 self taught. Prentice Hall, New Delhi: .
Harvard
Krakow I., . (1991). Lotus 1-2-3 self taught. Prentice Hall, New Delhi: .
MLA
Krakow Ira, . Lotus 1-2-3 self taught. Prentice Hall, New Delhi: . 1991.