Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Teresa Pica,Methods of Morpheme Quantification: Their Effect on the Interpretation of Second Language Data,Studies in Second Language Acquisition,0272-2631,Cambridge University Press (CUP),1983,6,1,69-78,https://cir.nii.ac.jp/crid/1361699993682722176,https://doi.org/10.1017/s0272263100000309