Feria, R. BlackBerry Playbook, The Professional Tablet. Manila bulletin.
Chicagoスタイル(17版)引用形式Feria, Rommel. "BlackBerry Playbook, The Professional Tablet." Manila Bulletin .
MLA(9版)引用形式Feria, Rommel. "BlackBerry Playbook, The Professional Tablet." Manila Bulletin, .
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