Gaya APA

BEAR, Firman E.. (1948). Diagnostic Techniques For Soils And Crops . Washington: The American Potash Institude.

Gaya Chicago

BEAR, Firman E.. Diagnostic Techniques For Soils And Crops. Washington: The American Potash Institude, 1948. Teks.

Gaya MLA

BEAR, Firman E.. Diagnostic Techniques For Soils And Crops. Washington: The American Potash Institude, 1948. Teks.

Gaya Turabian

BEAR, Firman E.. Diagnostic Techniques For Soils And Crops. Washington: The American Potash Institude, 1948. Teks.