Cita APA (7th ed.)

Mikkelsen, E. (1909). Conquering the arctic ice. With numerous illustrations and maps (1a. ed.). William Heinemann.

Cita Chicago (17th ed.)

Mikkelsen, Ejnar. Conquering the Arctic Ice. With Numerous Illustrations and Maps. 1a. ed. Londres: William Heinemann, 1909.

Cita MLA (9th ed.)

Mikkelsen, Ejnar. Conquering the Arctic Ice. With Numerous Illustrations and Maps. 1a. ed. William Heinemann, 1909.