Cita APA (7a ed.)
Laubach, F. C. (1960). Thirty years with the silent billion: Adventuring in literacy. Fleming H. Revell Company.
Cita Chicago Style (17a ed.)
Laubach, Frank C. Thirty Years with the Silent Billion: Adventuring in Literacy. London: Fleming H. Revell Company, 1960.
Cita MLA (9a ed.)
Laubach, Frank C. Thirty Years with the Silent Billion: Adventuring in Literacy. Fleming H. Revell Company, 1960.
Precaución: Estas citas no son 100% exactas.