Washington D.C. / ed. a. produced by Martha Ellen Zenfell ; phot. by Catherine Karnow ; ed. director Brian Bell ; created a. directed by Hans Hoefer. - 1st edition. - Singapore : Apa Publications, 1992 (Hoefer Press Pte. Ltd). - 308 p. : ill. ; 22 cm.см.. - (Insight guides). - ISBN 0-13-472069-5[MFN: 124986]