APA引文

Krauskopf, K. B. (1993). The physical universe. New York: McGraw-Hill.

Trích dẫn kiểu Chicago

Krauskopf, Konrad B. The Physical Universe. New York: McGraw-Hill, 1993.

MLA引文

Krauskopf, Konrad B. The Physical Universe. New York: McGraw-Hill, 1993.