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Research Style & Usage: APA/MLA


 
 

APA Style: Headings and Series

 

Levels of Headings

  • Five levels of heading are specified. The first level shown, level 5, is used only in papers that require all five levels:

  • Papers with fewer than five levels of headings should use the following heading levels:

    • One level: Level 1

    • Two levels: Levels 1 and 3

    • Three levels: Levels 1, 3, and 4

    • Four levels: Levels 1–4

 
 

Series

  • Enumerate series within a sentence by using lowercase letters surrounded by parentheses:

    The sample was composed of (a) students who scored over 700 on the SAT math, (b) students who scored between 580 and 700, and (c) students who scored lower than 580.

  • Enumerate series of paragraphs by using Arabic numerals followed by a period:

    Dr. Belfour predicted the following:

    i. Patients following a rigorous exercise program . . . [paragraph continues].

    ii. Patients following a moderate exercise program . . . [paragraph continues].

    iii. Patients who were inactive would . . . [paragraph continues].