Collins. (2011). CollinsEasy Learning Spanish Grammar. HarperCollins Publishers.
Chicagoスタイル(17版)引用形式Collins. CollinsEasy Learning Spanish Grammar. Great Britain: HarperCollins Publishers, 2011.
MLA(9版)引用形式Collins. CollinsEasy Learning Spanish Grammar. HarperCollins Publishers, 2011.
警告: この引用は必ずしも正確ではありません.