Cita APA (7th ed.)

Öpik, E. J. (1953). A climatological and astronomical interpretation of the ice ages and of the past variations of terrestrial climate. Armagh Observatory.

Cita Chicago (17th ed.)

Öpik, Ernst Julius. A Climatological and Astronomical Interpretation of the Ice Ages and of the Past Variations of Terrestrial Climate. [Armagh, Ire.]: Armagh Observatory, 1953.

Cita MLA (8th ed.)

Öpik, Ernst Julius. A Climatological and Astronomical Interpretation of the Ice Ages and of the Past Variations of Terrestrial Climate. Armagh Observatory, 1953.