Structured programming in APL /
Dennis P. Geller, Daniel P. Freedman.
APA Citation
Geller, D. P., Freedman, D. P. (1976). Structured programming in APL. Cambridge, Mass.: Winthrop Publishers.
MLA Citation
Geller, Dennis P., 1947-, and Daniel P. Freedman. Structured Programming In APL. Cambridge, Mass.: Winthrop Publishers, 1976.
Warning: These citations may not always be complete (especially for serials).