APA Citation

Janny Hardi Harahap. (2011). Belajar Keyboard Mudah & Praktis. Yogyakarta: Ekspresi.

Chicago Style Citation

Janny Hardi Harahap. Belajar Keyboard Mudah & Praktis. Yogyakarta: Ekspresi, 2011.

MLA Citation

Janny Hardi Harahap. Belajar Keyboard Mudah & Praktis. Yogyakarta: Ekspresi, 2011.

Warning: These citations may not always be 100% accurate.