APA
Welsh J., Elder J., . (1982). Introduction to Pascal. London: Prentice Hall International.
Chicago
Welsh Jim, Elder John, . 1982. Introduction to Pascal. London: Prentice Hall International.
Harvard
Welsh J., Elder J., . (1982). Introduction to Pascal. London: Prentice Hall International.
MLA
Welsh Jim, Elder John, . Introduction to Pascal. London: Prentice Hall International. 1982.
