Não informado. (1947). Strolling astronomer. Association of Lunar and Planetary Observers.
Chicagoスタイル(17版)引用形式Não informado. Strolling Astronomer. Las Cruces, NM: Association of Lunar and Planetary Observers, 1947.
MLA(8版)引用形式Não informado. Strolling Astronomer. Association of Lunar and Planetary Observers, 1947.
警告: この引用は必ずしも正確ではありません.