APA (7th ed.) Citation

Educational Testing Service, Graduate Record Examinations Board, & Warner Books (Firm). (1991). The official software for practicing to take the GRE general test--no. 7 (IBM software edition, version 2.1.). Published by Educational Testing Service for the Graduate Record Examinations Board.

Chicago Style (17th ed.) Citation

Educational Testing Service, Graduate Record Examinations Board, and Warner Books (Firm). The Official Software for Practicing to Take the GRE General Test--no. 7. IBM software edition, version 2.1. Princeton, NJ: Published by Educational Testing Service for the Graduate Record Examinations Board, 1991.

MLA (9th ed.) Citation

Educational Testing Service, et al. The Official Software for Practicing to Take the GRE General Test--no. 7. IBM software edition, version 2.1. Published by Educational Testing Service for the Graduate Record Examinations Board, 1991.