APA (7th ed.) Citation

Greiffenhagen, C., & Sharrock, W. (2005). Gestures in the blackboard work of mathematics instruction.

Chicago Style (17th ed.) Citation

Greiffenhagen, Christian, and Wes Sharrock. Gestures in the Blackboard Work of Mathematics Instruction. 2005.

MLA (9th ed.) Citation

Greiffenhagen, Christian, and Wes Sharrock. Gestures in the Blackboard Work of Mathematics Instruction. 2005.

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