@book{ BB05649355,
author = "Gall, Meredith D. and Gall, Joyce P. and Borg, Walter R.",
title = "Applying educational research : how to read, do, and use research to solve problems of practice",
publisher = "Pearson",
year = "2010",
edition = "6th ed",
URL = "https://ci.nii.ac.jp/ncid/BB05649355"
}