Text ( visual ) : unmediated Second language acquisition : an introductory course / Susan M. Gass, Larry Selinker. -- 2nd ed. -- : pbk. -- Mahwah, N.J. : Lawrence Erlbaum Associates , 2001. -- xvi, 488 p. : ill. ; 23 cm. -- Bibliography: p. 415-449 ; Includes indexes. -- ISBN 080583527X ; 0805835288 ; (BA50609675) ; https://ci.nii.ac.jp/ncid/BA50609675 Author Heading(s): Gass, Susan M. ; Selinker, Larry. -- Classification(s): LCC : P118.2 ; DC21 : 418. -- Subject Heading(s): LCSH : Second language acquisition