APA (7th ed.) Citation

Hall, N., & Johnston, R. D. (1955). How to use the card sorting key for the identification of Dicotyledonous families. Govt. Printer.

Chicago Style (17th ed.) Citation

Hall, N., and R. D. Johnston. How to Use the Card Sorting Key for the Identification of Dicotyledonous Families. Canberra: Govt. Printer, 1955.

MLA (8th ed.) Citation

Hall, N., and R. D. Johnston. How to Use the Card Sorting Key for the Identification of Dicotyledonous Families. Govt. Printer, 1955.