Allen, E. T. (2023). The Western Hemlock. Government Printing Office, Washington.
Cita Chicago (17th ed.)Allen, Edward T. The Western Hemlock. Government Printing Office, Washington, 2023.
Cita MLA (9th ed.)Allen, Edward T. The Western Hemlock. Government Printing Office, Washington, 2023.
Atenció: Aquestes cites poden no estar 100% correctes.