@book{66630,
	author = {Silverberg, Robert,},
	title = {Postmark Ganymede},
	publisher = {Project Gutenberg,},
	year = {2008},
	series = {Produced from Amazing Stories September 1957.},
	address = {Salt Lake City, UT :},
	note = {Release date is 2008-05-27},
	url = {https://www.gutenberg.org/ebooks/25629}
}