Gaya APA
Townsend, A.L.. (1985).
Plumbing I (2nd ed.).
Semarang:
IKIP.
Gaya Chicago
Townsend, A.L..
Plumbing I.
2nd ed.
Semarang:
IKIP,
1985.
.
Gaya MLA
Townsend, A.L..
Plumbing I.
2nd ed.
Semarang:
IKIP,
1985.
.
Gaya Turabian
Townsend, A.L..
Plumbing I.
2nd ed.
Semarang:
IKIP,
1985.
.