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APA Style Citation Guide 7th Edition

APA 7th Preferred Spelling

According to the Publication Manual of the American Psychological Association (2019, p. 161) 6.11 Preferred Spelling:
Spelling in APA Style Papers should conform to the Dictionary (
The spelling of psychological terms should conform to the APA Dictionary of Psychology (
If a word appears differently in these two dictionaries, follow the spelling in the APA Dictionary of Psychology. If a
word is in neither of these dictionaries, consult an unabridged edition of Webster's dictionary
(see If the dictionary offers a choice of spellings, select one and use it
consistently throughout your paper.