Gaya APA

HarperCollins, . (2000). Collins English dictionary and thesaurus: 21st century edition (2nd ed.). Aylesbury, England: Harpercollins Publishers.

Gaya MLA

HarperCollins, . "Collins English dictionary and thesaurus: 21st century edition". 2nd ed. Aylesbury, England: Harpercollins Publishers, 2000. Text.