APA (7e ed.) Bronvermelding

Howden, W. E. (1987). Functional program testing and analysis. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Howden, William E. Functional Program Testing and Analysis. New York: McGraw-Hill, 1987.

MLA (9e ed.) Bronvermelding

Howden, William E. Functional Program Testing and Analysis. McGraw-Hill, 1987.