Παραπομπή APA

Senguttuvan, P. (2007). Principles of airport economics. Excel books.

Παραπομπή Chicago Style

Senguttuvan, P.S. Principles of Airport Economics. New Delhi: Excel books, 2007.

Παραπομπή MLA

Senguttuvan, P.S. Principles of Airport Economics. Excel books, 2007.