MLA

Montagu, Charles, Duke of Manchester, 1660?-1722. R. Yard to the E of M, respecting the intended apprehension of Mills and Lord Drummond's priest, and the King's intention to direct the Spanish ambassador to leave the kingdom. (Partly in cipher, deciphered. Printed as deciphered, in Cole's Memoirs, p. 57) Whitehall. Box 2, folder 39. 1699 Sep 28/Oct 9. https://collections.library.yale.edu/catalog/16601171.

APA, 6th edition

Montagu, Charles, Duke of Manchester, 1660?-1722. (["Box 2, folder 39"])(1699 Sep 28/Oct 9)[R. Yard to the E of M, respecting the intended apprehension of Mills and Lord Drummond's priest, and the King's intention to direct the Spanish ambassador to leave the kingdom. (Partly in cipher, deciphered. Printed as deciphered, in Cole's Memoirs, p. 57) Whitehall]. https://collections.library.yale.edu/catalog/16601171.