Gaya APA
BESTERFIELD, D, H., O'HAGAN, R, E.
(1990).
Technical sketching:
(
2nd ed.)
.
Englewood Cliffs:
Prentice Hall.
Gaya MLA
BESTERFIELD, Dale, H.., O'HAGAN, Robert, E..
"Technical sketching:".
2nd ed.
Englewood Cliffs:
Prentice Hall,
1990.
Buku.