Gaya APA
Leftwich, R, H. (1976).
THE PRICE SYSTEM & RESOURCE ALLOCATION SIXT EDITION (6).
Oklahoma state university:
THE DRYDEN PRESS.
Gaya MLA
Leftwich, Richard, H..
"THE PRICE SYSTEM & RESOURCE ALLOCATION SIXT EDITION".
6
Oklahoma state university:
THE DRYDEN PRESS,
1976.
Text.