Kalm, Pehr (1772). Travels into North America: containing its natural history, and a circumstantial account of its plantations and agriculture in general, with the civil, ecclesiastical and commercial state of the country, the manners of the inhabitants, and several curious and important remarks on various subjects (İngilizce). Johann Reinhold Forster tarafından çevrildi. Londra: T. Lowndes. s. 60. ISBN9780665515002. OCLC1083889360.
Rucker, Colby. "Tall Trees of Maryland". Maryland's Tallest Native Tree Species. 27 Ocak 2023 tarihinde kaynağından arşivlendi. Erişim tarihi: 20 Ocak 2012.
Rucker, Colby. "Tall Trees of Maryland". Maryland's Tallest Native Tree Species. 27 Ocak 2023 tarihinde kaynağından arşivlendi. Erişim tarihi: 20 Ocak 2012.
worldcat.org
Kalm, Pehr (1772). Travels into North America: containing its natural history, and a circumstantial account of its plantations and agriculture in general, with the civil, ecclesiastical and commercial state of the country, the manners of the inhabitants, and several curious and important remarks on various subjects (İngilizce). Johann Reinhold Forster tarafından çevrildi. Londra: T. Lowndes. s. 60. ISBN9780665515002. OCLC1083889360.