Barnouw, A. J. (1969). Monthly letters: On the culture and history of the Netherlands. Van Gorcum.
Chicago-viite (17. p.)Barnouw, Adriaan Jacob. Monthly Letters: On the Culture and History of the Netherlands. Assen: Van Gorcum, 1969.
MLA-viite (9. p.)Barnouw, Adriaan Jacob. Monthly Letters: On the Culture and History of the Netherlands. Van Gorcum, 1969.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.