"Jack London" 1998, стр. vi. Library, Modern (1998). „ 'Jack London'— Biographical Note”. The Call of the Wild, White Fang & To Build a Fire. The Modern Library hundred best novels of the twentieth century. 88. Introduction by E. L. Doctorow (reprint изд.). Modern Library. ISBN978-0-375-75251-3. OCLC38884558.
Labor & Reesman, стр. 16–17. Labor, Earle; Reesman, Jeanne Campbell (1994). Jack London. Twayne's United States authors series. 230 (revised, illustrated изд.). New York: Twayne Publishers. ISBN978-0-8057-4033-2. OCLC485895575.
Labor & Reesman, стр. 39–40. Labor, Earle; Reesman, Jeanne Campbell (1994). Jack London. Twayne's United States authors series. 230 (revised, illustrated изд.). New York: Twayne Publishers. ISBN978-0-8057-4033-2. OCLC485895575.
Labor & Reesman, стр. 40. Labor, Earle; Reesman, Jeanne Campbell (1994). Jack London. Twayne's United States authors series. 230 (revised, illustrated изд.). New York: Twayne Publishers. ISBN978-0-8057-4033-2. OCLC485895575.
Doctorow, стр. xi. Doctorow, E. L.; London, Jack (1998). „Introduction”. The Call of the Wild, White Fang & To Build a Fire. The Modern Library hundred best novels of the twentieth century. 88 (reprint изд.). Modern Library. ISBN978-0-375-75251-3. OCLC38884558.
Doctorow, стр. xv. Doctorow, E. L.; London, Jack (1998). „Introduction”. The Call of the Wild, White Fang & To Build a Fire. The Modern Library hundred best novels of the twentieth century. 88 (reprint изд.). Modern Library. ISBN978-0-375-75251-3. OCLC38884558.