@book{12349,
	author = {Wells, Webster, 1851-1916},
	title = {Nueva trigonometría plana y esférica},
	publisher = {D. C. Heath},
	year = {[s.f.]},
	address = {Lexington},
	note = {Incluye tablas de logaritmos y ejercicios y respuestas},
	url = {https://archive.org/details/nuevatrigonometr00well}
}