(1923). Primary number projects, by Rosamond Losh ... and Ruth Mary Weeks ..
Cita Chicago (17th ed.)Primary Number Projects, by Rosamond Losh ... and Ruth Mary Weeks .. 1923.
Cita MLA (9th ed.)Primary Number Projects, by Rosamond Losh ... and Ruth Mary Weeks .. 1923.
Atenció: Aquestes cites poden no estar 100% correctes.