Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
YWCA n abbr ( = Young Women's Christian Association) (organization) же́нсийй христиа́нский сою́з молодёжи; (hostel) общежи́тие же́нского христиа́нского сою́за молодёжи
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.