Ratcliff, John. Timecode : a user's guide / John Ratcliff. - 2nd ed. - London : Focal Press, 1996. - 236 p. : ill. ; 24 cm. p. 227-229. ISBN: 0240514041 RM110.25 Subjects--Topical Terms: Video tapes--Editing.Time code (audio--visual tecnology).