Gaya APA
The doubleday pictorial library of health and economics. (1965).
New York:
Doubleday & Company Inc..
Gaya Chicago
The doubleday pictorial library of health and economics.
.
New York:
Doubleday & Company Inc.,
1965.
Buku.
Gaya MLA
The doubleday pictorial library of health and economics.
.
New York:
Doubleday & Company Inc.,
1965.
Buku.
Gaya Turabian
The doubleday pictorial library of health and economics.
New York:
Doubleday & Company Inc.,
1965.
Buku.