APA (7th ed.) Citation

Porter, A. G., & Rezmer, M. G. (1985). BASIC subroutines for the IBM PC and PCjr. Addison-Wesley.

Chicago Style (17th ed.) Citation

Porter, Alan G., and Martin G. Rezmer. BASIC Subroutines for the IBM PC and PCjr. Reading, Mass: Addison-Wesley, 1985.

MLA (9th ed.) Citation

Porter, Alan G., and Martin G. Rezmer. BASIC Subroutines for the IBM PC and PCjr. Addison-Wesley, 1985.