APA (7th ed.) Citation

Whitefield, G., & Bradford, W. Observations on some fatal mistakes, in a book lately published, and intitled, The doctrine of grace; or, The office and operations of the Holy Spirit vindicated from the insults of infidelity, and the abuses of fanaticism. By Dr. William Warburton, Lord Bishop of Gloucester: In a letter to a friend. By George Whitefield, A.M. late of Pembroke College, Oxford, and Chaplain to the Countess of Huntingdon. [Four lines from the Bishop of Gloucester's Preface].

Chicago Style (17th ed.) Citation

Whitefield, George, and William Bradford. Observations on Some Fatal Mistakes, in a Book Lately Published, and Intitled, The Doctrine of Grace; or, The Office and Operations of the Holy Spirit Vindicated from the Insults of Infidelity, and the Abuses of Fanaticism. By Dr. William Warburton, Lord Bishop of Gloucester: In a Letter to a Friend. By George Whitefield, A.M. Late of Pembroke College, Oxford, and Chaplain to the Countess of Huntingdon. [Four Lines from the Bishop of Gloucester's Preface].

MLA (9th ed.) Citation

Whitefield, George, and William Bradford. Observations on Some Fatal Mistakes, in a Book Lately Published, and Intitled, The Doctrine of Grace; or, The Office and Operations of the Holy Spirit Vindicated from the Insults of Infidelity, and the Abuses of Fanaticism. By Dr. William Warburton, Lord Bishop of Gloucester: In a Letter to a Friend. By George Whitefield, A.M. Late of Pembroke College, Oxford, and Chaplain to the Countess of Huntingdon. [Four Lines from the Bishop of Gloucester's Preface].

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