Não informado. (1942). Monthly Notes of the Astronomical Society of South Africa. Astronomical Society of Southern Africa.
Cita Chicago Style (17a ed.)Não informado. Monthly Notes of the Astronomical Society of South Africa. Cape Town, Africa do Sul: Astronomical Society of Southern Africa, 1942.
Cita MLA (8a ed.)Não informado. Monthly Notes of the Astronomical Society of South Africa. Astronomical Society of Southern Africa, 1942.
Precaución: Estas citas no son 100% exactas.