Cita APA (7a ed.)

Aitken, R. G. New general catalogue of double stars within 120° of the North Pole / by Robert Grant Aitken in succession to the late Eric Doolittle.

Cita Chicago Style (17a ed.)

Aitken, Robert Grant. New General Catalogue of Double Stars Within 120° of the North Pole / by Robert Grant Aitken in Succession to the Late Eric Doolittle. Washington : published by Carnegie Institution of Washington, 1932-.

Cita MLA (8a ed.)

Aitken, Robert Grant. New General Catalogue of Double Stars Within 120° of the North Pole / by Robert Grant Aitken in Succession to the Late Eric Doolittle.