Gaya APA
Schafer, J. (1980).
Fundamentals of Helicopter Maintenance Rast-05 (Rast-05).
United States of America:
Aviation Maintenance Publishers.
Gaya MLA
Schafer, Joseph.
"Fundamentals of Helicopter Maintenance Rast-05".
Rast-05
United States of America:
Aviation Maintenance Publishers,
1980.
Text.