URLs for web sites should be cited parenthetically in the main text, not in the reference list. Grant details and acknowledgments are not permitted as numbered references. Footnotes are not supported.
Parenthetically one may remark that those who teach the elements of the subject have not had their task made easier! The impact of these new modes of thinking about the sciences will eventually ...
I'm very willing to sacrifice some entrepreneurial freedom in return for a more civilized existence, and I don't think, parenthetically, that the trade-off is very great. I think we can have a ...
A Narrative of the Life and Travels of Mrs. Nancy Prince, 2nd ed. (Boston: Nancy Prince, 1853), n.p.; hereafter cited parenthetically in the text by page number. 13. A Narrative of the Life and ...