1993 Summer, p245(3). https://trove.nla.gov.au/work/58455012?q&versionId=71463131. Cengage Learning Gale: A Study Guide for Robert E. Hayden's "Those Winter Sundays" published by Gale, Study Guides, 2017. https://books.google.it/books/about/A_Study_Guide_for_Robert_E_Hayden_s_Thos.html?id=J3s_swEACAAJ&source=kp_book_description&redir_esc=y. Robert Hayden: Angle of Ascent: New and Selected Poems published by Liveright Publishing Corporation, November 17, 1975 (first published January 1, 1975). http://books.wwnorton.com/books/Angle-of-Ascent/ References External links Poetry Foundation: Robert Hayden Poetry in America: Elisa New American poems 20th-century poems