Pflugfelder, B., Hockensmith, S., & Garrett, S. (2014). Nick and Tesla's secret agent gadget battle: A mystery with spy cameras, code wheels, and other gadgets you can build yourself. Quirk Books.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Pflugfelder, Bob, Steve Hockensmith, و Scott Garrett. Nick and Tesla's Secret Agent Gadget Battle: A Mystery with Spy Cameras, Code Wheels, and Other Gadgets You Can Build Yourself. Philadelphia: Quirk Books, 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Pflugfelder, Bob, et al. Nick and Tesla's Secret Agent Gadget Battle: A Mystery with Spy Cameras, Code Wheels, and Other Gadgets You Can Build Yourself. Quirk Books, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.