1918, William Strunk Jr., Elements of Style, Ithaca, N.Y.: Priv. print. [Geneva, N.Y.: Press of W. F. Humphrey], http://www.bartleby.com/141/strunk2.html
When a wholly detached expression or sentence is parenthesized, the final stop comes before the last mark of parenthesis.
To interject.
1871, Alexander Innes Shand, Against Time, Littell & Gay, p. 66, https://books.google.ca/books?id=BS8nAAAAMAAJ&q=%22parenthesized%22+OR+%22parenthesised%22&dq=%22parenthesized%22+OR+%22parenthesised%22&hl=en&sa=X&ved=0ahUKEwi3ibvH4KHNAhUI4GMKHZRYAQoQ6AEISTAI
"Heaven grant it!" parenthesized Lord Rushbrook.
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