DOI: Acronym that stands for digital object identifier, which is a number under which electronic documents are cataloged.
Sentence case: A method of capitalizing in which the only capitalized words are the first word, any proper nouns, or words that immediately follow a colon (much like the capitalization pattern of a sentence, hence the name).
Seriation: The use of lists within text.
Title case: A method of capitalizing where all major words (including all verbs and all words with four or more letters) are capitalized.
For helpful tutorials on using APA style, see this link: http://www.apastyle.org/learn/%20