Gaya APA
Handley, Bill. (2001).
Speed Mathematics: Secrets of lightning mental calculatic .
:
WrightBooks.
Gaya Chicago
Handley, Bill.
Speed Mathematics: Secrets of lightning mental calculatic.
:
WrightBooks,
2001.
Teacher Resource.
Gaya MLA
Handley, Bill.
Speed Mathematics: Secrets of lightning mental calculatic.
:
WrightBooks,
2001.
Teacher Resource.
Gaya Turabian
Handley, Bill.
Speed Mathematics: Secrets of lightning mental calculatic.
:
WrightBooks,
2001.
Teacher Resource.