Παραπομπή APA

M C Chacko. Yathra (Panama-Peru-Machu Pichu). DC Books.

Παραπομπή Chicago Style

M C Chacko. Yathra (Panama-Peru-Machu Pichu). Kottayam: DC Books.

Παραπομπή MLA

M C Chacko. Yathra (Panama-Peru-Machu Pichu). DC Books.