Gaya APA

Poor, A. (1990). The data exchange moving data between 1-23, dBase, and other populer programs . Homewood, Illinois: Richard D. Irwin, Inc..

Gaya MLA

Poor, Alfred. "The data exchange moving data between 1-23, dBase, and other populer programs". Homewood, Illinois: Richard D. Irwin, Inc., 1990. Text.