APA ציטוט

Caldwell, W. E. (1968). Chemistry simplified. N. Y.: Barnes & Noble.

Trích dẫn kiểu Chicago

Caldwell, William E. Chemistry Simplified. N. Y.: Barnes & Noble, 1968.

ציטוט MLA

Caldwell, William E. Chemistry Simplified. N. Y.: Barnes & Noble, 1968.