APA (7th ed.) Citation

Judy Hindley & Margaret Chamberlain. (1993). A piece of string is a wonderful thing. Walker.

Chicago Style (17th ed.) Citation

Judy Hindley and Margaret Chamberlain. A Piece of String Is a Wonderful Thing. London: Walker, 1993.

MLA (9th ed.) Citation

Judy Hindley and Margaret Chamberlain. A Piece of String Is a Wonderful Thing. Walker, 1993.