Articles in APA style

file:///C:/Users/Annly/Downloads/s13075-015-0819-7.pdf

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7119210/pdf/IJSC-13-013.pdf

https://reader.elsevier.com/reader/sd/pii/S1568997220302378?token=885A9FD04B00F509BFF34BC1A8231CADA25270D05E4300F34D85EF3D417C7EEC3459316E1B3644F8731A44AEF3373261

https://journals.sagepub.com/doi/pdf/10.1177/1352458520917936