Gaya APA
ZEIDLER, U.
(1998).
HENKEL-REFERATE 34
(
International Edition)
.
Dusselfdorf:
Henkel.
Gaya MLA
ZEIDLER, Ulrich.
"HENKEL-REFERATE 34".
International Edition
Dusselfdorf:
Henkel,
1998.
Textbook.