Gaya APA
Biederman, . (1967).
Economic almanac 1967-1968 business fact book : ed. Paul Biederman .
New York:
The Macmillan-Company.
Gaya MLA
Biederman, .
"Economic almanac 1967-1968 business fact book : ed. Paul Biederman".
New York:
The Macmillan-Company,
1967.
Koleksi Lama.