citation-style-language/styles — pull request #648 by aurimasv (2013-07-26 01:33:57+00:00)
Title: [Cell Reports] Change parent to Cell

They don't explicitly say that the Cell style should be used, but the provided samples look identical to Cell style.

Sample open access publication: http://download.cell.com/cell-reports/pdf/PIIS221112471300315X.pdf

Not sure if other Cell Press journals also have incorrect parents.