APA
(1954). Little riddle book. Mount Vernon, USA: The Peter Pauper Press.
Chicago
1954. Little riddle book. Mount Vernon, USA: The Peter Pauper Press.
Harvard
(1954). Little riddle book. Mount Vernon, USA: The Peter Pauper Press.
MLA
Little riddle book. Mount Vernon, USA: The Peter Pauper Press. 1954.
