APA (7th ed.) Citation

Iqbal, S. M. Letters and writings of Iqbal.

Chicago Style (17th ed.) Citation

Iqbal, Sir Muhammad. Letters and Writings of Iqbal. Karachi, Iqbal Academy, 1967.

MLA (9th ed.) Citation

Iqbal, Sir Muhammad. Letters and Writings of Iqbal.

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