SPARKS, F. Plane trigonometri. New York.
Chicago Style (17th ed.) CitationSPARKS, F.W. Plane Trigonometri. New York.
MLA (8th ed.) CitationSPARKS, F.W. Plane Trigonometri. New York.
Warning: These citations may not always be 100% accurate.
APA (7th ed.) Citation