توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Westra, G. (1969). Petrogenesis of a composite metamorphic facies series in an intricate fault-zone in the south-eastern Sierra Cabrera, SE Spain. s.n..

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Westra, Gerhard. Petrogenesis of a Composite Metamorphic Facies Series in an Intricate Fault-zone in the South-eastern Sierra Cabrera, SE Spain. [S.l.: s.n., 1969.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Westra, Gerhard. Petrogenesis of a Composite Metamorphic Facies Series in an Intricate Fault-zone in the South-eastern Sierra Cabrera, SE Spain. s.n., 1969.