Cita APA (7a ed.)
Held: Construction Set E 193 : Gothic Rotating Dial Clock. Adolf Held KG.
Cita estilo Chicago (17a ed.)
Held: Construction Set E 193 : Gothic Rotating Dial Clock. Trossingen, Alemania: Adolf Held KG.
Cita MLA (9a ed.)
Held: Construction Set E 193 : Gothic Rotating Dial Clock. Adolf Held KG.
Precaución: Estas citas no son 100% exactas.