Du Plessis, J. (2012). The definitive guide to point and figure: A comprehensive guide to the theory and practical use of the point and figure charting method (2nd ed.). Harriman House.
Citace podle Chicago (17th ed.)Du Plessis, Jeremy. The Definitive Guide to Point and Figure: A Comprehensive Guide to the Theory and Practical Use of the Point and Figure Charting Method. 2nd ed. Petersfield, Hampshire: Harriman House, 2012.
Citace podle MLA (9th ed.)Du Plessis, Jeremy. The Definitive Guide to Point and Figure: A Comprehensive Guide to the Theory and Practical Use of the Point and Figure Charting Method. 2nd ed. Harriman House, 2012.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..