Heyel, C. (1955). Foreman's handbook/3e (3rd ed.). Mc graw hill book company.
Chicago ZitierstilHeyel, Carl. Foreman's Handbook/3e. 3rd ed. New York: Mc graw hill book company, 1955.
MLA ZitierstilHeyel, Carl. Foreman's Handbook/3e. 3rd ed. Mc graw hill book company, 1955.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.