APA (7th ed.) Citation

Ledgard, H. (1986). Professional PASCAL: Essays on the practice of programming. Addison-Wesley.

Chicago Style (17th ed.) Citation

Ledgard, Henry. Professional PASCAL: Essays on the Practice of Programming. Reading, Mass. u.a: Addison-Wesley, 1986.

MLA (9th ed.) Citation

Ledgard, Henry. Professional PASCAL: Essays on the Practice of Programming. Addison-Wesley, 1986.

Warning: These citations may not always be 100% accurate.