APA (7th ed.) Citation

Ledgard, H. F. (1981). Ada: An introduction. Springer-Verlag.

Chicago Style (17th ed.) Citation

Ledgard, Henry F. Ada: An Introduction. New York: Springer-Verlag, 1981.

MLA (8th ed.) Citation

Ledgard, Henry F. Ada: An Introduction. Springer-Verlag, 1981.