Gaya APA
LADO, R.
(1970).
Lado English Series Workbook 1
(
1st ed)
.
New York:
Regents Publshing Comp.Inc.
Gaya MLA
LADO, Robert.
"Lado English Series Workbook 1".
1st ed
New York:
Regents Publshing Comp.Inc,
1970.
Printed.