Natyashastra
द्विधा क्रिया भवत्यासां रङ्गपीठपरिक्रमे । प्रदक्षिणप्रदेशा च तथा चाप्यप्रदक्षिणा ॥ ५१॥
There are two types of movements in their practice: one is in the clockwise direction around the stage, and the other is in the counterclockwise direction.
english translation
dvidhA kriyA bhavatyAsAM raGgapIThaparikrame । pradakSiNapradezA ca tathA cApyapradakSiNA ॥ 51॥
hk transliteration by Sanscript