@book{75200,
	author = {Lange, Eva C.},
	title = {German in 20 lessons, intended for self-study and for use in schools :},
	publisher = {R.D. Cortina Co. ;},
	year = {1977.},
	series = {Cortina method},
	address = {New York :},
	edition = {7th ed. completely rev.},
	note = {First-6th ed. published under title: Cortina's German in 20 lessons.}
}