Ngā kupu hautoa kōpae
Tohutoro APA (7th ed.)
(1957). Agricultural conservation program. Government Printing Office.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
Tohutoru Kātū Chicago (17th ed.)
Agricultural Conservation Program. Government Printing Office, 1957.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
Tohutoro MLA (9th ed.)
Agricultural Conservation Program. Government Printing Office, 1957.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
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