APA ציטוט

M.Hurley Patrick. (1959). How old is the earth? Columbus: Anchor Book.

Trích dẫn kiểu Chicago

M.Hurley Patrick. How Old Is the Earth? Columbus: Anchor Book, 1959.

ציטוט MLA

M.Hurley Patrick. How Old Is the Earth? Columbus: Anchor Book, 1959.