Please regard this as an Invoice for English editorial services provided while researching and writing a feature article on the state of civil aviation in India titled "Flying High In India: Young High Fliers Spread Their Wings". I understand that the article is for inclusion in your January 20xx issue of Aviation Digest Magazine.
The work was performed between November 12, 20xx and December 14, 20xx. Final copy (4,800 words) was submitted to you by e-mail on December 13, 20xx.