Cita APA (7th ed.)

Howarth, G. (2002). Simply four: 4-mallet technique as easy as 1-2-3...4. Tapspace Pub.

Cita Chicago (17th ed.)

Howarth, Gifford. Simply Four: 4-mallet Technique as Easy as 1-2-3...4. Portland, Or: Tapspace Pub, 2002.

Cita MLA (9th ed.)

Howarth, Gifford. Simply Four: 4-mallet Technique as Easy as 1-2-3...4. Tapspace Pub, 2002.