APA (7th ed.) Citation

Ahn, F. (2015). A new practical and easy method of learning after the system.

Chicago Style (17th ed.) Citation

Ahn, F. A New Practical and Easy Method of Learning After the System. 2015.

MLA (9th ed.) Citation

Ahn, F. A New Practical and Easy Method of Learning After the System. 2015.

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