APA aipamena

Kalvart, P. (2005). Flush toilet prasnangal: Paristhithika pariharangal. Ecosolutions.

Chicago Style aipamena

Kalvart, Paul. Flush Toilet Prasnangal: Paristhithika Pariharangal. U. K.: Ecosolutions, 2005.

MLA aipamena

Kalvart, Paul. Flush Toilet Prasnangal: Paristhithika Pariharangal. Ecosolutions, 2005.