(2013). Walter Gautschi. selected works with commentaries / edited by Claude Brezinski, Ahmed Sameh. Volume 2.
Chicago-viite (17. p.)Walter Gautschi. Selected Works with Commentaries / Edited by Claude Brezinski, Ahmed Sameh. Volume 2. 2013.
MLA-viite (9. p.)Walter Gautschi. Selected Works with Commentaries / Edited by Claude Brezinski, Ahmed Sameh. Volume 2. 2013.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.