APA

Straka G. M., . (1967). The medieval world and its transformations, 800-1650. [New York: McGraw-Hill.

Chicago

Straka Gerald M, . 1967. The medieval world and its transformations, 800-1650. [New York: McGraw-Hill.

Harvard

Straka G. M., . (1967). The medieval world and its transformations, 800-1650. [New York: McGraw-Hill.

MLA

Straka Gerald M, . The medieval world and its transformations, 800-1650. [New York: McGraw-Hill. 1967.