Is the Mathis example correct? Shouldn't the question mark be in place of the period after the [Blog post] notation? You have Mathis, T. (2015, August 12). What is human systems integration? [Blog post]. Retrieved from http://blog.apabooks.org/2015/08/12/what-is-human-systems-integration/ But shouldn't it be Mathis, T. (2015, August 12). What is human systems integration [Blog post]? Retrieved from http://blog.apabooks.org/2015/08/12/what-is-human-systems-integration/ See point 2 of this blog post (https://blog.apastyle.org/apastyle/2013/04/punctuation-junction-periods-exclamation-points-and-question-marks.html) Thanks for clarifying!