Gaya APA
TOLLE, H, D. (1984).
Technical Drawing for Electrical Engineering 1. Basic Course (Text Book) (1).
Jerman:
GTZ.
Gaya MLA
TOLLE, Horst, Dieter.
"Technical Drawing for Electrical Engineering 1. Basic Course (Text Book)".
1
Jerman:
GTZ,
1984.
Printed.