APA (7th ed.) Citation

Ludwig, H. R. (1981). Understanding FORTRAN. Alfred Publishing.

Chicago Style (17th ed.) Citation

Ludwig, Herbert R. Understanding FORTRAN. Sherman Oaks: Alfred Publishing, 1981.

MLA (8th ed.) Citation

Ludwig, Herbert R. Understanding FORTRAN. Alfred Publishing, 1981.

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