APA

Tierney B., . (1992). The middle ages. - 5th edition. New York ; Saint Louis ; San Francisco: McGraw-Hill, Publishing Company.

Chicago

Tierney Brian, . 1992. The middle ages. - 5th edition. New York ; Saint Louis ; San Francisco: McGraw-Hill, Publishing Company.

Harvard

Tierney B., . (1992). The middle ages. - 5th edition. New York ; Saint Louis ; San Francisco: McGraw-Hill, Publishing Company.

MLA

Tierney Brian, . The middle ages. - 5th edition. New York ; Saint Louis ; San Francisco: McGraw-Hill, Publishing Company. 1992.