Cita APA (7a ed.)

Illick, J. S., & Aughanbaugh, J. E. (1930). Pitch pine in Pennsylvania. Dept. of Forests and Waters.

Cita Chicago Style (17a ed.)

Illick, Joseph S., y John E. Aughanbaugh. Pitch Pine in Pennsylvania. Harrisburg, Pa.: Dept. of Forests and Waters, 1930.

Cita MLA (8a ed.)

Illick, Joseph S., y John E. Aughanbaugh. Pitch Pine in Pennsylvania. Dept. of Forests and Waters, 1930.