APA

Vorse M. H., Miller A. D., Grant E. W. M., Austin M. H., Webster H. K., Norris K. T., O'Hagan A., Cooke M. B., Jordan E. G., White W. A., Scott L., Wilson H. L., Fisher D. C., Merwin S. & Hurst F. (2005). The Sturdy Oak. : Project Gutenberg.

Chicago

Vorse Mary Heaton, Miller Alice Duer, Grant Ethel Watts Mumford, Austin Mary Hunter, Webster Henry Kitchell, Norris Kathleen Thompson, O'Hagan Anne, Cooke Marjorie Benton, Jordan Elizabeth Garver, White William Allen, Scott Leroy, Wilson Harry Leon, Fisher Dorothy Canfield, Merwin Samuel and Hurst Fannie. 2005. The Sturdy Oak. : Project Gutenberg.

Harvard

Vorse M. H., Miller A. D., Grant E. W. M., Austin M. H., Webster H. K., Norris K. T., O'Hagan A., Cooke M. B., Jordan E. G., White W. A., Scott L., Wilson H. L., Fisher D. C., Merwin S. and Hurst F. (2005). The Sturdy Oak. : Project Gutenberg.

MLA

Vorse Mary Heaton, Miller Alice Duer, Grant Ethel Watts Mumford, Austin Mary Hunter, Webster Henry Kitchell, Norris Kathleen Thompson, O'Hagan Anne, Cooke Marjorie Benton, Jordan Elizabeth Garver, White William Allen, Scott Leroy, Wilson Harry Leon, Fisher Dorothy Canfield, Merwin Samuel and Hurst Fannie. The Sturdy Oak. : Project Gutenberg. 2005.