Gaya APA

Enviromental Health Criteria 19 Hidrogen Sulfide. (1981). Malang Kota: WHO Geneva.

Gaya Chicago

Enviromental Health Criteria 19 Hidrogen Sulfide. . Malang Kota: WHO Geneva, 1981. Text.

Gaya MLA

Enviromental Health Criteria 19 Hidrogen Sulfide. . Malang Kota: WHO Geneva, 1981. Text.

Gaya Turabian

Enviromental Health Criteria 19 Hidrogen Sulfide. Malang Kota: WHO Geneva, 1981. Print.