szerint

Etymology
From.

Postposition

 * 1) according to one's thought, belief, or guess
 * 2) by, following, in compliance with, according to, in obedience to, consistent with (e.g. a rule, a statement)
 * 1) by, following, in compliance with, according to, in obedience to, consistent with (e.g. a rule, a statement)
 * 1) by, following, in compliance with, according to, in obedience to, consistent with (e.g. a rule, a statement)

Usage notes
The two senses are similar but there is an important difference.
 * In the first sense: Péter szerint: after this one will say what one really believes that Peter really thinks. But it often also expresses doubt in the information's correctness.
 * If there is a case when we think that Peter knows the truth but he lies, we have to say Péter állítása szerint. This uses the second sense: “by Peter's statement”.