Johnson, V., & Schäfer, G. (1983). Aus dem Leben gegriffen: [multiple-choice reading comprehension at advanced level] (1. publ., reprinted.). Heinemann.
Citazione stile Chigago Style (17a edizione)Johnson, Victor, e Günther Schäfer. Aus Dem Leben Gegriffen: [multiple-choice Reading Comprehension at Advanced Level]. 1. publ., reprinted. London: Heinemann, 1983.
Citatione MLA (9a ed.)Johnson, Victor, e Günther Schäfer. Aus Dem Leben Gegriffen: [multiple-choice Reading Comprehension at Advanced Level]. 1. publ., reprinted. Heinemann, 1983.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.