Ronse, B. (1958). 114/00052: Krantenknipsels "Spoetnik-bollen".
Cita Chicago (17th ed.)Ronse, BSP-afdeling. 114/00052: Krantenknipsels "Spoetnik-bollen". 1958.
Cita MLA (8th ed.)Ronse, BSP-afdeling. 114/00052: Krantenknipsels "Spoetnik-bollen". 1958.
Atenció: Aquestes cites poden no estar 100% correctes.