ENCYCLOPEDIA BRITANICA. (2004). FOOD PLANTS LEARN ABOUT THE MANY DIFFERENT KINDS OF PLANTS WE EAT. ENCYCLOPEDIA BRITANICA.
Chicago-viite (17. p.)ENCYCLOPEDIA BRITANICA. FOOD PLANTS LEARN ABOUT THE MANY DIFFERENT KINDS OF PLANTS WE EAT. CHICAGO: ENCYCLOPEDIA BRITANICA, 2004.
MLA-viite (9. p.)ENCYCLOPEDIA BRITANICA. FOOD PLANTS LEARN ABOUT THE MANY DIFFERENT KINDS OF PLANTS WE EAT. ENCYCLOPEDIA BRITANICA, 2004.
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