Question

How do I write "8th century AD" in APA format?

Answer 1

Like this should be fine, "800 B.C.".

Answer 2

Sources: http://grammar.ccc.commnet.edu/grammar/abbreviations.htm


Either lower or upper case letters can be used with A.M., a.m., P.M., p.m. The abbreviation B.C. (before Christ) is used after the date; A.D. (anno domini, "in the year of the Lord") appears before the date. The abbreviations B.C. and A.D. are sometimes replaced with B.C.E. (before the common era) and C.E. (common era), both used after the date (although one must add that those abbreviations are neither widely used nor commonly understood). Sometimes you will see 790 BC and AD 78 written without periods and written in SMALL CAPS. Note that many style books are now recommending SMALL CAPS for all appearances of acronyms, such as NAACP or NCAA. The effect of this practice is to allow the acronym to blend more smoothly with the rest of the text.