APA (7th ed.) Citation

Hjelsvold, S., & McCallum, S. Traction Trebuchet. EXARC.

Chicago Style (17th ed.) Citation

Hjelsvold, Siri, and Simon McCallum. Traction Trebuchet. EXARC.

MLA (9th ed.) Citation

Hjelsvold, Siri, and Simon McCallum. Traction Trebuchet. EXARC.

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