Campbell, L. (1913). Comparison stars for 279 variables: Prepared for publication by Leon Campbell under the direction of Edward C. Pickering. Printed from Funds resulting from the Will of Josiah Quiney, jun. .. Published by the Observatory.
Chicago-Zitierstil (17. Ausg.)Campbell, Leon. Comparison Stars for 279 Variables: Prepared for Publication by Leon Campbell Under the Direction of Edward C. Pickering. Printed from Funds Resulting from the Will of Josiah Quiney, Jun. .. Cambridge, Mass: Published by the Observatory, 1913.
MLA-Zitierstil (9. Ausg.)Campbell, Leon. Comparison Stars for 279 Variables: Prepared for Publication by Leon Campbell Under the Direction of Edward C. Pickering. Printed from Funds Resulting from the Will of Josiah Quiney, Jun. .. Published by the Observatory, 1913.