David Farrell (March 22, 2016). "On the Charts This Week". Archived from the original on April 2, 2023. Retrieved April 2, 2023. This sales figure represents the number of copies sold in the first week of release.
David Farrell (July 21, 2015). "On the Charts This Week: July 21st". FYI Music News. Archived from the original on February 5, 2023. Retrieved February 5, 2023. This sales figure represents the number of copies sold in the first week of release.
David Farrell (March 22, 2016). "On the Charts This Week". Archived from the original on April 2, 2023. Retrieved April 2, 2023. This sales figure represents the number of copies sold in the first week of release.
David Farrell (July 21, 2015). "On the Charts This Week: July 21st". FYI Music News. Archived from the original on February 5, 2023. Retrieved February 5, 2023. This sales figure represents the number of copies sold in the first week of release.