Gaya APA

SPEAR, H, E. (2015). Secure Flight Program Airline Passenger Screening Efforts: Transportation Issues, Policies and R&D . New York: Nova Science.

Gaya MLA

SPEAR, HELLEN, E.. "Secure Flight Program Airline Passenger Screening Efforts: Transportation Issues, Policies and R&D". New York: Nova Science, 2015. E-Book.