Gaya APA
DeGarmo, E. Paul. (1979).
Engineering economy. 6th edition .
New York:
Macmillan Pub. Coy. Inc.
Gaya Chicago
DeGarmo, E. Paul.
Engineering economy. 6th edition.
New York:
Macmillan Pub. Coy. Inc,
1979.
Buku Teks.
Gaya MLA
DeGarmo, E. Paul.
Engineering economy. 6th edition.
New York:
Macmillan Pub. Coy. Inc,
1979.
Buku Teks.
Gaya Turabian
DeGarmo, E. Paul.
Engineering economy. 6th edition.
New York:
Macmillan Pub. Coy. Inc,
1979.
Buku Teks.