Verse-by-Verse Commentaries:

Joyce G. Baldwin, Haggai, Zechariah, Malachi (Tyndale), Inter-Varsity, 1972
Burton L. Goddard, "Malachi" in The Wycliffe Bible Commentary, The Southwestern Company, 1968: 913-920.
Andrew E. Hill
, Malachi (Anchor), Doubleday, 1998.****
T. V. Moore,
Haggai, Zechariah & Malachi (Geneva), Banner of Truth, 1993.
Douglas Stuart, "Malachi" in The Minor Prophets, Vol. III (ed. T. McComiskey), Baker, 1998.
Marvin A. Sweeney, The Twelve Propets, Vol. II, (Berit Olam), Liturgical, 2000.
Pieter A. Verhoef, The Books of Haggai and Malachi (NICOT), Eerdmans, 1994.****

Monographs, Compilations, and Studies:

Carl Haak, Studies in Malachi, Reformed Free Publishing Association, 1993.
Gordon P. Hugenberger, Marriage As a Covenant: Biblical Law and Ethics As Developed from Malachi (Biblical Studies Library),
____ Baker, 1998.****
Walter Kaiser, Malachi: God's Unchanging Love, Baker, 1984.
Karl William Weyde, Prophecy & Teaching: Prophetic Authority, Form Problems & the Use of Traditions in the Book of Malachi,
____ Beihefte Zur Zeitschrift für die Alttestamentische Wissenschaft, 288), Walter de Gruyter, 2000.

Articles and Essays:

More Commentaries:

Elizabeth Achtemeier, Nahum-Malachi (Interpretation), Westminster John Knox, 1986.
Robert L. Alden, "Malachi" in Expositor's Bible Commentary, Vol. VII, Zondervan, 1985.
Walter Kaiser, Micah, Nahum, Habakkuk, Zephaniah, Haggai, Zechariah, Malachi (Mastering the Old Testament), Word Books,
____ 1992.
J. L. Mackay, Haggai, Zechariah & Malachi (Focus on the Bible), Christian Focus, 1994.
Ralph L Smith, Micah-Malachi, (Word Biblical Commentary, 32), Word Books, 1984.

More Monographs:

Beth Glazier-McDonald, Malachi: The Divine Messenger (SBL Dissertation), Scholars Press, 1987.
Julia O'Brian, Priest and Levite in Malachi (SBL Dissertation, 121), Scholars Press, 1990.