BORROWED FROM MINOR
When writing in a major key, the following chords may be borrowed from the parallel minor:

FIGURE 14.1. The Borrowed Supersonic from Minor

FIGURE 14.2. The Borrowed

FIGURE 14.3. The Borrowed Subdominant in a Plagal Cadence
Extensions on the dominant chord

FIGURE 14.4.

FIGURE 14.5. The Borrowed Submediant
Non-harmonic tones occurring with borrowed chords must be borrowed from the parallel minor.

FIGURE 14.6. Non-harmonic Tones Used with Borrowed Chords
Overuse of borrowed chords and accompanying non-harmonics should be avoided as modulation may occur.

BORROWED FROM MAJOR
When writing in a minor key, the following chords may be borrowed from the parallel major:

Dominant (maj.) and Dominant Seventh
Leading tone triad (dim.)
Picardy third on tonic chord (maj.)
Supersonic chord (min.) when harmonizing the raised sixth scale degree in ascending form of melodic minor scale.

Non-harmonic tones occurring with borrowed chords must be borrowed from the parallel major.