APA

Du Chaillu P. B., . (1889). The Viking age: the early history, manners, and customs of the ancestors of the English-speaking nations. New York: John Murray.

Chicago

Du Chaillu Paul Belloni, . 1889. The Viking age: the early history, manners, and customs of the ancestors of the English-speaking nations. New York: John Murray.

Harvard

Du Chaillu P. B., . (1889). The Viking age: the early history, manners, and customs of the ancestors of the English-speaking nations. New York: John Murray.

MLA

Du Chaillu Paul Belloni, . The Viking age: the early history, manners, and customs of the ancestors of the English-speaking nations. New York: John Murray. 1889.