APA (7th ed.) Citation

.Kochan, S. G., .Wood, P. H., & .Kochan, S. G. (1990). UNIX Shell programming (Rev. ed.). Hayden Books.

Chicago Style (17th ed.) Citation

.Kochan, Stephen G., Patrick H. .Wood, and Stephen G. .Kochan. UNIX Shell Programming. Rev. ed. Carmel, Ind., USA: Hayden Books, 1990.

MLA (9th ed.) Citation

.Kochan, Stephen G., et al. UNIX Shell Programming. Rev. ed. Hayden Books, 1990.