Illick, J. S., & Aughanbaugh, J. E. (1930). Pitch pine in Pennsylvania. Dept. of Forests and Waters.
Chicago Style (17th ed.) CitationIllick, Joseph S., i John E. Aughanbaugh. Pitch Pine in Pennsylvania. Harrisburg, Pa.: Dept. of Forests and Waters, 1930.
Cita MLAIllick, Joseph S., i John E. Aughanbaugh. Pitch Pine in Pennsylvania. Dept. of Forests and Waters, 1930.
Atenció: Aquestes cites poden no estar 100% correctes.