APA

Kilpatrick J., Swafford J., Findell B. & Mathematics Learning Study Committee C. f. E. D. o. B. a. S. S. a. E. (2001). Adding it up. Washington, D.C: National Academy Press.

Chicago

Kilpatrick Jeremy, Swafford Jane, Findell Bradford and Mathematics Learning Study Committee Center for Education Division of Behavioral and Social Sciences and Education. 2001. Adding it up. Washington, D.C: National Academy Press.

Harvard

Kilpatrick J., Swafford J., Findell B. and Mathematics Learning Study Committee C. f. E. D. o. B. a. S. S. a. E. (2001). Adding it up. Washington, D.C: National Academy Press.

MLA

Kilpatrick Jeremy, Swafford Jane, Findell Bradford and Mathematics Learning Study Committee Center for Education Division of Behavioral and Social Sciences and Education. Adding it up. Washington, D.C: National Academy Press. 2001.