Lua APA (7ú heag.)

Harlow, W. M. (1957). Trees of the eastern and central United States and Canada. Dover.

Lua i Stíl Chicago (17ú heag.)

Harlow, William M. Trees of the Eastern and Central United States and Canada. Nueva York: Dover, 1957.

Lua MLA (9ú heag.)

Harlow, William M. Trees of the Eastern and Central United States and Canada. Dover, 1957.

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