APA (7th ed.) Citation

(1758). The French convert: Being a true relation of the happy conversion of a noble French lady, from the errors and superstitions of popery to the reformed religion, by means of a Protestant gardiner [sic], her servant (The twelfth edition.). Printed and sold by W. Dunlap, at the newest-printing-office, on the south side of the Jersey-Market.

Chicago Style (17th ed.) Citation

The French Convert: Being a True Relation of the Happy Conversion of a Noble French Lady, from the Errors and Superstitions of Popery to the Reformed Religion, by Means of a Protestant Gardiner [sic], Her Servant. The twelfth edition. Philadelphia: Printed and sold by W. Dunlap, at the newest-printing-office, on the south side of the Jersey-Market, 1758.

MLA (9th ed.) Citation

The French Convert: Being a True Relation of the Happy Conversion of a Noble French Lady, from the Errors and Superstitions of Popery to the Reformed Religion, by Means of a Protestant Gardiner [sic], Her Servant. The twelfth edition. Printed and sold by W. Dunlap, at the newest-printing-office, on the south side of the Jersey-Market, 1758.

Warning: These citations may not always be 100% accurate.