@book{83987,
	author = {Sloman, Albert E. and Vega, Lope de},
	title = {The sources of Calderón's El príncipe constante},
	publisher = {Blackwell},
	year = {1950.},
	series = {Modern language studies},
	address = {Oxford},
	note = {La fortuna adversa is edited from the only extant text included in a made-up volume, entitled Comedias de Lope, now in the University of California Library. The present writer considers Tárrega the more probable author of the play.}
}