APA

Mathews R. K., . (1968). The Yukon. New York: Holt, Rinehart and Winston.

Chicago

Mathews Richard K, . 1968. The Yukon. New York: Holt, Rinehart and Winston.

Harvard

Mathews R. K., . (1968). The Yukon. New York: Holt, Rinehart and Winston.

MLA

Mathews Richard K, . The Yukon. New York: Holt, Rinehart and Winston. 1968.