APA (7th ed.) Citation

Locher, H., Koeble, W., & Frik, W. (1977). Kommentar zur HOAI. Werner.

Chicago Style (17th ed.) Citation

Locher, Horst, Wolfgang Koeble, and Werner Frik. Kommentar Zur HOAI. Düsseldorf: Werner, 1977.

MLA (9th ed.) Citation

Locher, Horst, et al. Kommentar Zur HOAI. Werner, 1977.