Gaya APA
Speight, H. (1967).
Economics and industrial efficiency .
New York:
Macmillan Publishing Company.
Gaya Chicago
Speight, H.
Economics and industrial efficiency.
New York:
Macmillan Publishing Company,
1967.
Buku Teks.
Gaya MLA
Speight, H.
Economics and industrial efficiency.
New York:
Macmillan Publishing Company,
1967.
Buku Teks.
Gaya Turabian
Speight, H.
Economics and industrial efficiency.
New York:
Macmillan Publishing Company,
1967.
Buku Teks.