SCOTT PEARL. (1999). EXERCISES IN MENTAL ARITHMETIC.
Cita Chicago Style (17a ed.)SCOTT PEARL. EXERCISES IN MENTAL ARITHMETIC. 1999.
Cita MLA (9a ed.)SCOTT PEARL. EXERCISES IN MENTAL ARITHMETIC. 1999.
Precaución: Estas citas no son 100% exactas.
Cita APA (7a ed.)