APA引文

(1993). General Catalogue. Ley bold Didactic GMBH.

Chicago Style (17th ed.) Citation

General Catalogue. Ley bold Didactic GMBH, 1993.

MLA引文

General Catalogue. Ley bold Didactic GMBH, 1993.

警告：这些引文格式不一定是100％准确.