Collins German Phrase Book. This specific vintage edition was edited or authored by different individuals depending on the print run, but a version edited by Edwin Carpenter was published around 1981.
Book Details
Title: Collins German Phrase Book
Publisher: Collins
Authors/Editors: The edition pictured is similar to those associated with J.R. Foreman (1964) or Gerda Williamson (1966), and Edwin Carpenter (1981).
Publication Year: Various editions exist, with some vintage versions from the 1960s to the 1980s.
Format: The book in the image appears to be a compact, travel-sized paperback or hardcover.