Gaya APA
Simon, V, &, N, N. (2010).
International Chemistry Olympiads : Problems & Solutions 2003-2008 .
U S A:
Lexington.
Gaya MLA
Simon, V., &, Nenov,, N..
"International Chemistry Olympiads : Problems & Solutions 2003-2008".
U S A:
Lexington,
2010.
Printed Book.