Gaya APA
Schafer, J. (1980).
Fundamentals of Helicopter Maintenance Rast-07 (Rast-07).
United States of America:
Aviation Maintenance Publishers.
Gaya MLA
Schafer, Joseph.
"Fundamentals of Helicopter Maintenance Rast-07".
Rast-07
United States of America:
Aviation Maintenance Publishers,
1980.
Text.