中国科学技术信息研究所--国家工程技术数字图书馆

walden university.(33)

alliant international university.(20)

the university of wisconsin - madison.(18)

capella university.(16)

university of toronto (canada).(15)

the chicago school of professional psychology.(14)

university of california los angeles.(13)

walden university(12)

the chinese university of hong kong (hong kong).(11)

the university of north carolina at chapel hill.(11)

university of kansas.(11)

university of washington.(10)

university of california san francisco.(9)

university of minnesota.(9)

virginia commonwealth university.(9)

boston university.(8)

state university of new york at buffalo.(8)

the university of arizona.(8)

university of south florida.(8)

east carolina university.(7)

michigan state university.(7)

the university of alabama at birmingham.(7)

university of hawai'i at manoa.(7)

university of pittsburgh.(7)

west virginia university.(7)

azusa pacific university.(6)

boston college.(6)

harvard university.(6)

indiana university.(6)

texas woman's university.(6)