@book{90888,
	author = {Westerman, Percy F. and Wigfull, W. Edward},
	title = {The Sea-girt Fortress: A Story of Heligoland},
	publisher = {Project Gutenberg,},
	year = {2015},
	address = {Salt Lake City, UT :},
	note = {Release date is 2015-09-24},
	url = {https://www.gutenberg.org/ebooks/50050}
}