易发久. (2011). 每天进步一点点: Progress a little every day. 凤凰出版社.
Dyfyniad Arddull Chicago易发久. 每天进步一点点: Progress a Little Every Day. 凤凰出版社, 2011.
Dyfyniad MLA易发久. 每天进步一点点: Progress a Little Every Day. 凤凰出版社, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.