Cita APA (7a ed.)
Willingham, W. W. (1965). Research and development: A report to the trustees of the college entrance examination board.
Cita estilo Chicago (17a ed.)
Willingham, Warren W. Research and Development: A Report to the Trustees of the College Entrance Examination Board. 1965.
Cita MLA (9a ed.)
Willingham, Warren W. Research and Development: A Report to the Trustees of the College Entrance Examination Board. 1965.
Precaución: Estas citas no son 100% exactas.