This is one of the all time classic defenses of the divine right of Presbyterianism. It also gives us a clear picture of the original intent of the English Presbyterians working at the Westminster Assembly (and is therefore very useful in determining the original intent of the Westminster Confession itself). It can be seen here that it was the strong conviction of the majority of English divines at Westminster that Presbyterianism is the only form of church government that is instituted by God in His Word.
In The Divine Right of the Gospel Ministry these same authors, later, give us a glimpse of their jus divinum Presbyterianism. 'So strongly were they committed to this thorough-going jus divinum view that they stated the following 'four things that justly deserve to be abhorred by all good Christians: (1) An Universal Toleration of all Religions; (2) An Universal Admittance of all men to the Lord's Supper; (3) Universal Grace, that is, that Christ died equally for all, and that all men have free-will to be saved; and (4) Universal Allowance of all that suppose themselves gifted to preach without Ordination' (Hall, p. xxi).
'The Editor to the Reader,' written by the Cameronian 'T.H' (Thomas Henderson) - an Irish Reformed Presbyterian, recommends this volume as 'one of the best defences of presbytery which he has ever seen.'
Reformation Bookshelf CDs 23 and 24 are on Church government at: http://www.swrb.com/Puritan/reformation-bookshelf-CDs.htm