@Misc{key1,
title       = {},
author      = {},
howpublished= {},
month       = {},
year        = {},
note        = {},
	}

	@Book{key2,
title     = {},
publisher = {},
year      = {},
author    = {},
address   = {},
edition   = {},
	}

	@Booklet{key3,
author		= {},
title		= {},
howpublished= {},
month 		= {},
year		= {},
	}
	
	@online{key4,
title = {},
date = {},
url = {},
urldate = {},
	}