Gaya APA
Bogolyubov, S., Voinov, A. (1968).
Engineering drawing : a course for technical schools of mechanical engineering .
Moscow:
Mir Publishers.
Gaya MLA
Bogolyubov, S.., Voinov, A..
"Engineering drawing : a course for technical schools of mechanical engineering".
Moscow:
Mir Publishers,
1968.
Text.