My goal is to resubmit a paper to another journal, which has a requirement to format all citations with APA style. I am using Google Scholar to get a first version of each citation in APA, and want to make sure I understand what every part of the citation means. In the following, I have no problem understanding that the bold part means Volume 31, Issue 1 and pages ranging from 1 to 38.
Fawcett, T. (2004). ROC graphs: Notes and practical considerations for researchers. Machine learning, 31(1), 1-38.
However, I cannot understand what the single, six digit number represents in the following citation. Is this acceptable APA style? Shouldn't that be a range of pages instead of a single number?
Mo, H., Sun, H., Liu, J., & Wei, S. (2019). Developing window behavior models for residential buildings using XGBoost algorithm. Energy and Buildings, 205, 109564.
Also, I cannot understand the following. It seems to be Volume 8, Issue 4 but what about the bold part starting with e?
Sagi, O., & Rokach, L. (2018). Ensemble learning: A survey. Wiley Interdisciplinary Reviews: Data Mining and Knowledge Discovery, 8(4), e1249.