APA (7th ed.) Citation

Mathens, D. Ears. System Publishing House PTE.LTD.

Chicago Style (17th ed.) Citation

Mathens, Douglas. Ears. Singapore: System Publishing House PTE.LTD.

MLA (9th ed.) Citation

Mathens, Douglas. Ears. System Publishing House PTE.LTD.

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