アメリカ文学案内 by 寺門泰彦[ほか]編著

The Oxford Companion to American Literature. 6th ed. by James D. Hart; Phillip Leininger (Revised by)

The Oxford English dictionary. 2nd ed. by Edmund S. Weiner (Editor); John Simpson (Editor)

新編英和活用大辞典 by 市川繁治郎

Roget's International Thesaurus. 8th ed., rev. and updated by Barbara Ann Kipfer; Robert L. Chapman

American National Biography by John A. Garraty (Editor); Mark C. Carnes (Editor)

アメリカ文学研究 = American literature by 日本アメリカ文学会