Foster, A. G. (1990). Merrill algebra one. Merrill.
Cita Chicago (17th ed.)Foster, Alan G. Merrill Algebra One. Ohio: Merrill, 1990.
Cita MLA (9th ed.)Foster, Alan G. Merrill Algebra One. Merrill, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.