Toro Rosso team boss Franz Tost has admitted he is angry after Singapore.
The team's Spanish driver Jaime Alguersuari was given a drive-through penalty for an incident not captured by the cameras involving Jarno Trulli.
"It is a joke that he is punished because he tried to attack Trulli and lightly touched him," Tost is quoted by the Swiss newspaper Blick.
"We urgently need professional stewards," he added.
In Singapore, the stewards were former grand prix winner Heinz-Harald Frentzen, lawyer and German racing official Dr Gerd Ennser, and World Motor Sport Council member Radovan Novak.
