APA (7th ed.) Citation

Helbig, K. (1974). Insulares Südostasien (Sonderdr.).

Chicago Style (17th ed.) Citation

Helbig, Karl. Insulares Südostasien. Sonderdr. 1974.

MLA (9th ed.) Citation

Helbig, Karl. Insulares Südostasien. Sonderdr. 1974.

Warning: These citations may not always be 100% accurate.