TOBIRA 1: Mayumi Oka, Junko Kondo, Michio Tsutsui, Yuta Mori, Tomoko Okuno, Yoshimi Sakakibara, Ayaka Sogabe, Masae Yasuda
Workbook 1, Workbook 2: Mayumi Oka, Junko Kondo, Yoshimi Sakakibara, Hiroyo Nishimura, Michio Tsutsui
TOBIRA 1: Mayumi Oka, Junko Kondo, Michio Tsutsui, Yuta Mori, Tomoko Okuno, Yoshimi Sakakibara, Ayaka Sogabe, Masae Yasuda
Workbook 1, Workbook 2: Mayumi Oka, Junko Kondo, Yoshimi Sakakibara, Hiroyo Nishimura, Michio Tsutsui
TOBIRA 1: Beginning Japanese Textbook:
https://textbooks.maruzen.info/products/tobira-1-beginning-japanese
TOBIRA I: Beginning Japanese Workbook 1:
https://textbooks.maruzen.info/products/tobira-i-beginning-japanese-workbook-1-hiragana-katakana-kanji-reading-writing
TOBIRA I: Beginning Japanese Workbook 2:
https://textbooks.maruzen.info/products/tobira-i-beginning-japanese-workbook-2-vocabulary-grammar-listening
■Answer sheets
Answer sheets are available for download via the Workbook section on the TOBIRA website.
https://tobirabeginning.9640.jp/workbook/
■Answer keys
Instructors can access answer keys by registering through the Instructor Resources section on the TOBIRA website. An electronic version can otherwise be purchased and viewed separately.