Gaya APA
Ebel, H, F., E, I, B, C, I, R, W.
(2004).
The art of scientific writing
.
Weinheim:
.
Gaya MLA
Ebel, Hans, F., E, I., Bliefert,, Claus, II., Russey,, William.
"The art of scientific writing".
Weinheim:
,
2004.
Text.