APA

Delury G. E, . (1979). The world almanac & book of facts. N.-Y: NEA.

Chicago

Delury G. E, . 1979. The world almanac & book of facts. N.-Y: NEA.

Harvard

Delury G. E, . (1979). The world almanac & book of facts. N.-Y: NEA.

MLA

Delury G. E, . The world almanac & book of facts. N.-Y: NEA. 1979.