Cita APA (7a ed.)
Perkinson, H. J. Possibilities of error, The: An approach to education / [por] Henry J. Perkinson.
Cita estilo Chicago (17a ed.)
Perkinson, Henry J. Possibilities of Error, The: An Approach to Education / [por] Henry J. Perkinson.
Cita MLA (9a ed.)
Perkinson, Henry J. Possibilities of Error, The: An Approach to Education / [por] Henry J. Perkinson.
警告：這些引文格式不一定是100％准確.