Gaya APA
STWERTKA, A., SCHOENBERG, I, E. (2002).
A guide to the lelements / Albert Stwertka .
New York:
Oxford University Press.
Gaya MLA
STWERTKA, Albert., SCHOENBERG, Irene, E..
"A guide to the lelements / Albert Stwertka".
New York:
Oxford University Press,
2002.
Text.