Gaya APA

Downing, D., Williams, D, K. (2007). The McGraw-Hill dictionary of misspelled and easily confused words : choose the right word and spell it correctly . : Tata McGraw-Hill Publishing Company Limited.

Gaya MLA

Downing, David., Williams, Deborah, K.. "The McGraw-Hill dictionary of misspelled and easily confused words : choose the right word and spell it correctly". : Tata McGraw-Hill Publishing Company Limited, 2007. Text.