(1957). "Possible Soviet Preparations for Flight Testing an Intercontinental Ballistic Missile or an Earth Satellite," in CIA; Office of Current Intelligence - Current Intelligence Weekly Review, April 11, 1957, Top Secret [Eider]. https://doi.org/10.1163/ejb9789004244627.B04144
Chicago-Zitierstil (17. Ausg.)"Possible Soviet Preparations for Flight Testing an Intercontinental Ballistic Missile or an Earth Satellite," in CIA; Office of Current Intelligence - Current Intelligence Weekly Review, April 11, 1957, Top Secret [Eider]. 1957. https://doi.org/10.1163/ejb9789004244627.B04144.
MLA-Zitierstil (9. Ausg.)"Possible Soviet Preparations for Flight Testing an Intercontinental Ballistic Missile or an Earth Satellite," in CIA; Office of Current Intelligence - Current Intelligence Weekly Review, April 11, 1957, Top Secret [Eider]. 1957. https://doi.org/10.1163/ejb9789004244627.B04144.