APA Citation

Poerwo, H. H. (1993). Irregular verbs. Penerbit Kanisius.

Chicago Style Citation

Poerwo, Helly Handoko. Irregular Verbs. Penerbit Kanisius, 1993.

MLA Citation

Poerwo, Helly Handoko. Irregular Verbs. Penerbit Kanisius, 1993.

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