Boon, W. H. (1984). Genes and the I.Q. Singapore: PG Publishing Pte Ltd.
Trích dẫn kiểu ChicagoBoon, Wong Hock. Genes and the I.Q. Singapore: PG Publishing Pte Ltd, 1984.
MLA citiranjeBoon, Wong Hock. Genes and the I.Q. Singapore: PG Publishing Pte Ltd, 1984.
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