SECRETARIATE OF INDIA TECH. (1983). BIOGAS: INFORMATION GUIDE BK & BASIC BBLIOGRAPHY. S I T.
Cita Chicago (17th ed.)SECRETARIATE OF INDIA TECH. BIOGAS: INFORMATION GUIDE BK & BASIC BBLIOGRAPHY. S I T, 1983.
Cita MLA (9th ed.)SECRETARIATE OF INDIA TECH. BIOGAS: INFORMATION GUIDE BK & BASIC BBLIOGRAPHY. S I T, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.