Papasin, B., & Sarmiento, J. (2010). Great grandpa tree. Katha Pub.
芝加哥风格引文Papasin, Bimbo, 与 Jan Sarmiento. Great Grandpa Tree. Quezon City: Katha Pub, 2010.
MLA引文Papasin, Bimbo, 与 Jan Sarmiento. Great Grandpa Tree. Katha Pub, 2010.
警告：这些引文格式不一定是100％准确.