Cita APA (7a ed.)
Ord-Hume, A. W. The Musical Clock: Musical and Automaton Clocks and Watches. Mayfield Books.
Cita estilo Chicago (17a ed.)
Ord-Hume, Arthur W.J.G. The Musical Clock: Musical and Automaton Clocks and Watches. Derbyshire, Inglaterra: Mayfield Books.
Cita MLA (9a ed.)
Ord-Hume, Arthur W.J.G. The Musical Clock: Musical and Automaton Clocks and Watches. Mayfield Books.
Precaución: Estas citas no son 100% exactas.