No inverted commas in punctuating quotations.

I was taught to use inverted commas when writing quotations. The following example does not use inverted commas. Is this the American way? Thanks.

Long quotations
For quotations that are more than four lines of prose or three lines of verse, place quotations in a free-standing block of text and omit quotation marks. Start the quotation on a new line, with the entire quote indented ½ inch from the left margin; maintain double-spacing. Only indent the first line of the quotation by an additional quarter inch if you are citing multiple paragraphs. Your parenthetical citation should come after the closing punctuation mark. When quoting verse, maintain original line breaks. (You should maintain double-spacing throughout your essay.)

For example, when citing more than four lines of prose, use the following examples:

Nelly Dean treats Heathcliff poorly and dehumanizes him throughout her narration:
They entirely refused to have it in bed with them, or even in their room, and I had no more sense, so, I put it on the landing of the stairs, hoping it would be gone on the morrow. By chance, or else attracted by hearing his voice, it crept to Mr. Earnshaw's door, and there he found it on quitting his chamber. Inquiries were made as to how it got there; I was obliged to confess, and in recompense for my cowardice and inhumanity was sent out of the house. (Bronte 78)