APA Edition Citation

Dirksen, P. H., & Welch, J. W. (1981). Waterloo micro fortan: Tutorial and reference manual. the authors.

Chicago Edition Citation

Dirksen, P H., and J W. Welch. Waterloo Micro Fortan: Tutorial and Reference Manual. Indianapolis: the authors, 1981.

MLA Edition Citation

Dirksen, P H., and J W. Welch. Waterloo Micro Fortan: Tutorial and Reference Manual. the authors, 1981.