Não informado. (1947). Strolling astronomer. Association of Lunar and Planetary Observers.
Style de citation Chicago (17e éd.)Não informado. Strolling Astronomer. Las Cruces, NM: Association of Lunar and Planetary Observers, 1947.
Style de citation MLA (8e éd.)Não informado. Strolling Astronomer. Association of Lunar and Planetary Observers, 1947.
Attention : ces citations peuvent ne pas être correctes à 100%.