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2. {2} G. W. Cherry Pascal Programming Structures: An Introduction to Systematic Programming Reston (1980). {2} G. W. Cherry Pascal Programming Structures: An Introduction to Systematic Programming Reston (1980).
3. {3} P. M. Chirlian Pascal Matrix Publishers Portland Oregon (1980). {3} P. M. Chirlian Pascal Matrix Publishers Portland Oregon (1980).
4. {4} R. Conway D. Cries and E. C. Zimmerman A Primer on Pascal Winthrop (1976); 2nd edition 1981. {4} R. Conway D. Cries and E. C. Zimmerman A Primer on Pascal Winthrop (1976); 2nd edition 1981.
5. {5} W. Findlay and D. F. Watt Pascal: An Introduction to Methodical Programming Pittman London (1978). {5} W. Findlay and D. F. Watt Pascal: An Introduction to Methodical Programming Pittman London (1978).