We construct explicitly the
q
q
-vertex operators (intertwining operators) for the level one modules
V
(
Λ
i
)
V(\Lambda _i)
of the classical quantum affine algebras of twisted types using interacting bosons, where
i
=
0
,
1
i=0, 1
for
A
2
n
−
1
(
2
)
A_{2n-1}^{(2)}
(
n
≥
3
n\geq 3
),
i
=
0
i=0
for
D
4
(
3
)
D_4^{(3)}
,
i
=
0
,
n
i=0, n
for
D
n
+
1
(
2
)
D_{n+1}^{(2)}
(
n
≥
2
n\geq 2
), and
i
=
n
i=n
for
A
2
n
(
2
)
A_{2n}^{(2)}
(
n
≥
1
n\geq 1
). A perfect crystal graph for
D
4
(
3
)
D_4^{(3)}
is constructed as a by-product.